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| ID | Type | Description | Link |
|---|---|---|---|
| 7R34AA028730-04 | U.S. NIH Grant/Contract | View source |
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| Name | Class |
|---|---|
| National Institute on Alcohol Abuse and Alcoholism (NIAAA) | NIH |
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The most successful young adult alcohol or marijuana interventions involve the provision of accurate, nonjudgmental personalized feedback, but notably the inclusion and effectiveness of protective behavioral strategies (PBS) content is inconsistent. Moreover, active components of brief interventions are not well understood, and findings have been inconclusive regarding whether PBS mediates intervention efficacy of college student personalized feedback interventions (PFIs), with only some studies showing evidence of mediation. One possible reason for these findings is that investigators often do not know young adults' motivations for using (or not using) PBS or the quality of PBS use across individuals or across drinking occasions. The proposed study will provide an in-depth examination of which PBS young adults are motivated to use (including implementation quality) and reasons that young adults may or may not use PBS. Understanding why young adults are choosing not to use PBS on specific occasions or do not engage in effective or high-quality PBS use on certain occasions has significant clinical implications, whereby interventions may need to spend more time increasing motivations to use PBS in an effective manner or work on reducing perceived barriers (i.e., reasons individuals are not using PBS). Clinicians may then be better able to work with young adults in various settings to reduce or prevent excessive alcohol and marijuana use and related consequences. The proposed research has high potential for making a substantial impact on the field and public health (particularly as more states permit legal access to marijuana for those over 21) as it will address a problem of high importance (alcohol and marijuana use) by being the first to develop and refine a PBS intervention that specifically focuses on motivations for alcohol and marijuana PBS use and non-use as well as quality of use, which is an overlooked aspect of current PBS-related intervention approaches. The development of more efficacious interventions to reduce the proportion of young adults who engage in excessive alcohol use and who experience consequences is a key priority of the NIAAA. Related, development of more effective interventions to reduce risk from marijuana use is an area of great importance for the NIDA.
The majority of young adults who use both alcohol and marijuana do so simultaneously. Simultaneous Alcohol and Marijuana (SAM) use is defined as using alcohol and marijuana at the same time so that their effects overlap. Individuals who engage in Concurrent Alcohol and Marijuana (CAM) use are often characterized as those who report both alcohol and marijuana use within the same time period (e.g., past month, past week). An increasing body of literature has documented CAM and SAM use on a given day among young adults. Event-level findings show SAM use is associated with increased risk for consequences, compared to marijuana use alone or CAM use. Given that the investigators' focus in this application is on daily-level substance use behaviors, the investigators define CAM use as using both substances on the same day, but not so that their effects overlap. Interventions should focus on reducing drinking as well as drinking that occurs in conjunction with marijuana use to provide a more comprehensive evaluation of intervention efficacy. The proposed research in this application will develop and test a novel online and text message (TM) protective behavioral strategies (PBS) intervention to reduce alcohol, marijuana, CAM, and SAM use and related negative consequences among young adults.
One way interventions could prevent or reduce alcohol- and marijuana-related consequences is by promoting the use of PBS, which are behaviors that individuals can use to limit consequences and/or reduce substance use. PBS are often incorporated into brief interventions or TM interventions in the form of skills training. Despite the empirical support for including PBS content in brief interventions, findings have been inconclusive regarding whether PBS mediate intervention efficacy among college students. One possible explanation is that skills-based PBS interventions prematurely focus on "how" to use PBS, but not "why" PBS might be used or used with high quality. Research is needed to determine motivations for when and why young adults may or may not decide to use PBS to reduce harm while using alcohol and/or marijuana, which can then enable investigators to better address these motivations in brief interventions. Research has yet to examine how alcohol and marijuana PBS use on a given day relates to an individual's use of alcohol alone or marijuana alone in comparison to CAM or SAM use. The proposed study will fill these critical gaps by identifying the extent to which motivations for PBS use and nonuse (marijuana or alcohol) and quality of PBS use (degree of effectiveness or degree of implementation) differ when using alcohol alone versus concurrently or simultaneously with marijuana. The overall goal of this research is to inform a pilot study of a newly developed alcohol and marijuana PBS intervention. The proposed research will (1) collect pilot data to establish feasibility and acceptability and test the interactive online and TM PBS intervention (baseline, 2-month) while also (2) collecting event-level data to examine daily-level associations among PBS motivation/quality, PBS use and non-use, alcohol and/or marijuana use, and negative consequences with a focus on how PBS may differ on CAM or SAM use days compared to alcohol-only days.
Aim 1: Examine motivations for alcohol and marijuana PBS use (and non-use of PBS) as well as quality of PBS use among young adults (ages 18-24) who use both alcohol and marijuana. The present study will conduct online focus groups (10 groups, N=10 individuals per group) and cognitive interviews (N=10) to determine why young adults use or do not use specific PBS related to alcohol and/or marijuana use. Focus groups will address how PBS use or motivations to avoid consequences may differ by gender (male, female, non-binary). Focus groups and cognitive interviews will discuss the level of quality in which PBS are used and various contexts in which PBS may or may not be used. Discussions will consider use of either substance alone on a given day as well as SAM or CAM use on a given day and will include ways in which the motivations and quality of PBS could be incorporated into an online and TM PBS intervention, as well as elicit feedback on mock intervention material. Using an exploratory sequential mixed methods design, an iterative process of focus groups and cognitive interviews will inform the development and delivery of the intervention to be tested in the pilot study (Aim 2). Aim 1 is not a clinical trial.
Aim 2: Conduct a pilot study with young adults (N=200; ages 18-24), who typically use alcohol and marijuana at least two days per week, to determine feasibility, acceptability, and preliminary effect sizes (to inform a future R01 application). Participants will be randomized to either the intervention or wait-list control. The intervention is a brief interactive online intervention focusing on self-selected alcohol and marijuana PBS messages and motives for using alcohol- and marijuana-related PBS and includes intervention content delivered via TMs three days a week (random day, Friday, Saturday) over eight consecutive weekends. All participants will report PBS use, motivations for PBS use (and non-use), quality of PBS use, readiness to change, and alcohol and marijuana use in morning surveys timed to occur the day after the intervention TMs for those in the intervention group. The proposed research in this application will provide an in-depth understanding of young adults' PBS use and has potential to develop a more efficacious intervention for these co-occurring or simultaneous alcohol and marijuana behaviors. Aim 2 is the clinical trial.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Online and Text Message Intervention | Experimental | Participants randomized to the intervention will receive a link to the online intervention following baseline completion. The online and Text Message intervention, and its delivery, will be designed and adapted based on the results of the formative focus groups and cognitive interviews and is meant to be non-confrontational in tone, seeks to increase motivation to increase the quality use of PBS and decrease motivations for non-use of PBS. Intervention participants will receive personalized PBS Text Messages 3x per week (based on self-selections from the interactive online intervention) for 8 consecutive weeks timed to occur on a random weekday as well as Friday and Saturday. |
|
| Assessment Only Control | No Intervention | The assessment only control condition will not receive any intervention content during the 8-week period of data collection, but will complete baseline, 2-month, and daily surveys according to the same schedule as the intervention group in order to assess event-level PBS use, PBS non-use, alcohol and marijuana use, CAM and SAM use, and related consequences for up to 24 days over an 8-week period. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Online and Text Messaging Intervention | Behavioral | The online and TM intervention, and its delivery, will be designed and adapted based on the results of the formative focus groups and cognitive interviews and is meant to be non-confrontational in tone, seeks to increase motivation to increase the quality use of PBS and decrease motivations for non-use of PBS. |
| Measure | Description | Time Frame |
|---|---|---|
| Typical Number of Drinks Per Occasion | Measures the typical number of drinks consumed per occasion. | Baseline |
| Typical Number of Drinks Per Occasion | Measures the typical number of drinks consumed per occasion. | 2 Month |
| Young Adult Alcohol Consequences Questionnaire | The Young Adult Alcohol Consequences Questionnaire will asses consequences from drinking. | Baseline |
| Young Adult Alcohol Consequences Questionnaire | The Young Adult Alcohol Consequences Questionnaire will asses consequences from drinking. | 2 Month |
| Alcohol Protective Behavioral Strategies | Alcohol Protective Behavioral Strategies (i.e., tips and strategies used to reduce harm when drinking) will be assessed with the Protective Behavioral Strategies Survey-20. Protective Behavioral Strategies were assessed using the full Protective Behavioral Strategies Scale-20 (PBSS-20), which measures the frequency of using strategies to limit alcohol use and related consequences. The PBSS-20 consists of 20 items rated on a 6-point Likert-type scale (1 = Never to 6 = Always). Scores are averaged across items, with higher values indicating greater use of protective behavioral strategies (i.e., a more favorable outcome). | Baseline |
| Alcohol Protective Behavioral Strategies | Alcohol Protective Behavioral Strategies (i.e., tips and strategies used to reduce harm when drinking) will be assessed with the Protective Behavioral Strategies Survey-20. Protective Behavioral Strategies were assessed using the full Protective Behavioral Strategies Scale-20 (PBSS-20), which measures the frequency of using strategies to limit alcohol use and related consequences. The PBSS-20 consists of 20 items rated on a 6-point Likert-type scale (1 = Never to 6 = Always). Scores are averaged across items, with higher values indicating greater use of protective behavioral strategies (i.e., a more favorable outcome). |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Melissa A Lewis, PhD | University of North Texas Health Science Center | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of North Texas Health Science Center | Fort Worth | Texas | 76107 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| Background | National Institute on Alcohol Abuse and Alcoholism (2019). Planning alcohol interventions using NIAAA's College Alcohol Intervention Matrix (CollegeAIM). Bethesda, MD: National Institutes of Health, (NIH Publication No. 19-AA-8017, Updated December 2019). | ||
| Background | Miller, W. R., & Rollnick, S. (2013). Motivational interviewing: Helping people change (3rd ed.). New York, NY: Guilford Press. | ||
| 25206342 | Background | Gaume J, McCambridge J, Bertholet N, Daeppen JB. Mechanisms of action of brief alcohol interventions remain largely unknown - a narrative review. Front Psychiatry. 2014 Aug 26;5:108. doi: 10.3389/fpsyt.2014.00108. eCollection 2014. | |
| 26164065 |
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A select number of researchers will have access to unidentified participant data at the close of the study.
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Participants were recruited from Texas state using a variety of recruitment methods. Individuals were invited to complete an online eligibility survey for participation in a randomized clinical trial to test the effect of an online and text message personalized feedback intervention. Recruitment/enrollment and data collection period went from August 2023 to October 2024.
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| ID | Title | Description |
|---|---|---|
| FG000 | Online and Text Message Intervention | Participants randomized to the intervention will receive a link to the online intervention following baseline completion. The online and Text Message intervention, and its delivery, will be designed and adapted based on the results of the formative focus groups and cognitive interviews and is meant to be non-confrontational in tone, seeks to increase motivation to increase the quality use of PBS and decrease motivations for non-use of PBS. Intervention participants will receive personalized PBS Text Messages 3x per week (based on self-selections from the interactive online intervention) for 8 consecutive weeks timed to occur on a random weekday as well as Friday and Saturday. |
| FG001 | Assessment Only Control | The assessment only control condition will not receive any intervention content during the 8-week period of data collection, but will complete baseline, 2-month, and daily surveys according to the same schedule as the intervention group in order to assess event-level PBS use, PBS non-use, alcohol and marijuana use, CAM and SAM use, and related consequences for up to 24 days over an 8-week period. |
| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
|
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| ID | Title | Description |
|---|---|---|
| BG000 | Online and Text Message Intervention | Participants randomized to the intervention will receive a link to the online intervention following baseline completion. The online and Text Message intervention, and its delivery, will be designed and adapted based on the results of the formative focus groups and cognitive interviews and is meant to be non-confrontational in tone, seeks to increase motivation to increase the quality use of PBS and decrease motivations for non-use of PBS. Intervention participants will receive personalized PBS Text Messages 3x per week (based on self-selections from the interactive online intervention) for 8 consecutive weeks timed to occur on a random weekday as well as Friday and Saturday. |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Continuous | Mean |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Typical Number of Drinks Per Occasion | Measures the typical number of drinks consumed per occasion. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Typical number of drinks per occasion | Baseline |
|
Adverse event data were collected between initial screening and final follow-up for each participant, a period of approximately 2 months.
We used clinicaltrials.gov definitions for adverse events and serious adverse events.
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Online and Text Message Intervention | Participants randomized to the intervention will receive a link to the online intervention following baseline completion. The online and Text Message intervention, and its delivery, will be designed and adapted based on the results of the formative focus groups and cognitive interviews and is meant to be non-confrontational in tone, seeks to increase motivation to increase the quality use of PBS and decrease motivations for non-use of PBS. Intervention participants will receive personalized PBS Text Messages 3x per week (based on self-selections from the interactive online intervention) for 8 consecutive weeks timed to occur on a random weekday as well as Friday and Saturday. |
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This is a small pilot trial designed to collect feasibility and acceptability information. All findings are based on self-report of alcohol and cannabis use.
| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Melissa Lewis | University of Texas at Arlington | 817-272-9833 | Melissa.Lewis@uta.edu |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Feb 3, 2025 | Oct 20, 2025 | Prot_SAP_000.pdf |
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| ID | Term |
|---|---|
| D000073599 | Health Risk Behaviors |
| D040242 | Risk Reduction Behavior |
| ID | Term |
|---|---|
| D015438 | Health Behavior |
| D001519 | Behavior |
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|
| 2 Month |
| Average Days Cannabis Use Past Two Months | This measure will assess typical days cannabis was used the past two months. | Baseline |
| Average Days Cannabis Use Past Two Months | This measure will assess typical days cannabis was used the past two months. | 2 Month |
| Cannabis Protective Behavioral Strategies | Cannabis Protective Behavioral Strategies were assessed using the Protective Behavioral Strategies for Marijuana Scale, a 26-item measure evaluating the frequency of strategies used to reduce cannabis use and related harm. Items are rated on a 6-point Likert scale (1 = Never to 6 = Always). Scores are averaged across items, with higher scores indicating greater use of protective behavioral strategies (i.e., a more favorable outcome). | Baseline |
| Cannabis Protective Behavioral Strategies | Cannabis Protective Behavioral Strategies were assessed using the Protective Behavioral Strategies for Marijuana Scale, a 26-item measure evaluating the frequency of strategies used to reduce cannabis use and related harm. Items are rated on a 6-point Likert scale (1 = Never to 6 = Always). Scores are averaged across items, with higher scores indicating greater use of protective behavioral strategies (i.e., a more favorable outcome). | 2 Month |
| Marijuana Consequences Questionnaire | The Marijuana Consequences Questionnaire and a modified version will measure a broad range of negative cannabis consequences. | Baseline |
| Marijuana Consequences Questionnaire | The Marijuana Consequences Questionnaire and a modified version will measure a broad range of negative cannabis consequences. | 2 Month |
| Simultaneous Alcohol and Marijuana Use | Questions regarding SAM use will be adapted from MTF. | Baseline |
| Simultaneous Alcohol and Marijuana Use | Questions regarding SAM use will be adapted from MTF. | 2 Month |
| Feasibility- Number of Participants Who Visited the Online Intervention | The Number of Participants who Visited the Online Intervention | 2 Month |
| Feasibility- Number of Online Modules Selected | The number of modules participants in the intervention condition selected to view. | Baseline |
| Acceptability- System Usability Scale | Scores on a measure of subjective assessments of usability (SUS) from participants in the intervention condition. Total score from 0 to 100 with higher scores indicating higher usability. | Post-Intervention |
| Background |
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| 35438642 | Derived | Lewis MA, Litt DM, Fairlie AM, Kilmer JR, Kannard E, Resendiz R, Walker T. Investigating Why and How Young Adults Use Protective Behavioral Strategies for Alcohol and Marijuana Use: Protocol for Developing a Randomized Controlled Trial. JMIR Res Protoc. 2022 Apr 19;11(4):e37106. doi: 10.2196/37106. |
| BG001 | Assessment Only Control | The assessment only control condition will not receive any intervention content during the 8-week period of data collection, but will complete baseline, 2-month, and daily surveys according to the same schedule as the intervention group in order to assess event-level PBS use, PBS non-use, alcohol and marijuana use, CAM and SAM use, and related consequences for up to 24 days over an 8-week period. |
| BG002 | Total | Total of all reporting groups |
| Years |
|
| Sex: Female, Male | Count of Participants | Participants |
|
| Race (NIH/OMB) | Race. The number of participants represents those who provided data for this outcome measure. | Count of Participants | Participants |
|
| Ethnicity (NIH/OMB) | Ethnicity. The number of participants represents those who provided data for this outcome measure. | Count of Participants | Participants |
|
| Current Student | Current Student. The number of participants represents those who provided data for this outcome measure. | Count of Participants | Participants |
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| OG001 | Assessment Only Control | The assessment only control condition will not receive any intervention content during the 8-week period of data collection, but will complete baseline, 2-month, and daily surveys according to the same schedule as the intervention group in order to assess event-level PBS use, PBS non-use, alcohol and marijuana use, CAM and SAM use, and related consequences for up to 24 days over an 8-week period. |
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| Primary | Typical Number of Drinks Per Occasion | Measures the typical number of drinks consumed per occasion. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Typical number of drinks per occasion | 2 Month |
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| Primary | Young Adult Alcohol Consequences Questionnaire | The Young Adult Alcohol Consequences Questionnaire will asses consequences from drinking. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Number of Consequences | Baseline |
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| Primary | Young Adult Alcohol Consequences Questionnaire | The Young Adult Alcohol Consequences Questionnaire will asses consequences from drinking. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Number of Consequences | 2 Month |
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| Primary | Alcohol Protective Behavioral Strategies | Alcohol Protective Behavioral Strategies (i.e., tips and strategies used to reduce harm when drinking) will be assessed with the Protective Behavioral Strategies Survey-20. Protective Behavioral Strategies were assessed using the full Protective Behavioral Strategies Scale-20 (PBSS-20), which measures the frequency of using strategies to limit alcohol use and related consequences. The PBSS-20 consists of 20 items rated on a 6-point Likert-type scale (1 = Never to 6 = Always). Scores are averaged across items, with higher values indicating greater use of protective behavioral strategies (i.e., a more favorable outcome). | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Units on a 1-6 scale | Baseline |
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| Primary | Alcohol Protective Behavioral Strategies | Alcohol Protective Behavioral Strategies (i.e., tips and strategies used to reduce harm when drinking) will be assessed with the Protective Behavioral Strategies Survey-20. Protective Behavioral Strategies were assessed using the full Protective Behavioral Strategies Scale-20 (PBSS-20), which measures the frequency of using strategies to limit alcohol use and related consequences. The PBSS-20 consists of 20 items rated on a 6-point Likert-type scale (1 = Never to 6 = Always). Scores are averaged across items, with higher values indicating greater use of protective behavioral strategies (i.e., a more favorable outcome). | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Units on a 1-6 scale | 2 Month |
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| Primary | Average Days Cannabis Use Past Two Months | This measure will assess typical days cannabis was used the past two months. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Average days cannabis use past two month | Baseline |
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| Primary | Average Days Cannabis Use Past Two Months | This measure will assess typical days cannabis was used the past two months. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Average days cannabis use past two month | 2 Month |
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| Primary | Cannabis Protective Behavioral Strategies | Cannabis Protective Behavioral Strategies were assessed using the Protective Behavioral Strategies for Marijuana Scale, a 26-item measure evaluating the frequency of strategies used to reduce cannabis use and related harm. Items are rated on a 6-point Likert scale (1 = Never to 6 = Always). Scores are averaged across items, with higher scores indicating greater use of protective behavioral strategies (i.e., a more favorable outcome). | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Units on a 1-6 scale | Baseline |
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| Primary | Cannabis Protective Behavioral Strategies | Cannabis Protective Behavioral Strategies were assessed using the Protective Behavioral Strategies for Marijuana Scale, a 26-item measure evaluating the frequency of strategies used to reduce cannabis use and related harm. Items are rated on a 6-point Likert scale (1 = Never to 6 = Always). Scores are averaged across items, with higher scores indicating greater use of protective behavioral strategies (i.e., a more favorable outcome). | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Units on a 1-6 scale | 2 Month |
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| Primary | Marijuana Consequences Questionnaire | The Marijuana Consequences Questionnaire and a modified version will measure a broad range of negative cannabis consequences. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Number of cannabis consequences | Baseline |
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| Primary | Marijuana Consequences Questionnaire | The Marijuana Consequences Questionnaire and a modified version will measure a broad range of negative cannabis consequences. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Number of cannabis consequences | 2 Month |
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| Primary | Simultaneous Alcohol and Marijuana Use | Questions regarding SAM use will be adapted from MTF. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Number of times SAM use past two months | Baseline |
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| Primary | Simultaneous Alcohol and Marijuana Use | Questions regarding SAM use will be adapted from MTF. | The number of participants represents those who provided data for this outcome measure. | Posted | Mean | Standard Deviation | Number of times SAM use past two months | 2 Month |
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| Primary | Feasibility- Number of Participants Who Visited the Online Intervention | The Number of Participants who Visited the Online Intervention | The number of participants represents those who provided data for this outcome measure. Only the intervention group was assessed. | Posted | Number | Participants | 2 Month |
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| Primary | Feasibility- Number of Online Modules Selected | The number of modules participants in the intervention condition selected to view. | The number of participants represents those who provided data for this outcome measure. Only the intervention group completed this measure. | Posted | Mean | Standard Deviation | Mean modules selected | Baseline |
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| Primary | Acceptability- System Usability Scale | Scores on a measure of subjective assessments of usability (SUS) from participants in the intervention condition. Total score from 0 to 100 with higher scores indicating higher usability. | The number of participants represents those who provided data for this outcome measure. Only the intervention group completed this measure. The control group did not receive this measure. | Posted | Mean | Standard Deviation | Mean SUS score | Post-Intervention |
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| 0 |
| 83 |
| 0 |
| 83 |
| 0 |
| 83 |
| EG001 | Assessment Only Control | The assessment only control condition will not receive any intervention content during the 8-week period of data collection, but will complete baseline, 2-month, and daily surveys according to the same schedule as the intervention group in order to assess event-level PBS use, PBS non-use, alcohol and marijuana use, CAM and SAM use, and related consequences for up to 24 days over an 8-week period. | 0 | 79 | 0 | 79 | 0 | 79 |
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