UCP participants received the same clinical and educational management for candidates for insulin pump or continuous glucose monitoring that is received by similar patients who were not enrolled in this study. The respective endocrinology practices at the enrolling sites all strive to meet or exceed the current American Diabetes Association Standards for Clinical Practice in the management of type 1 diabetes in this population. Thorough patient education is the cornerstone of that care, especially regarding the incorporation of insulin pumps and continuous glucose monitors into the treatment regimen for a given patient.

Usual Clinical Practice: Diabetes management and education related to insulin pump or continuous glucose monitor as currently practiced at the enrolling site.

Participants randomized to SMDM received all components of UCP supplemented with access to the decision aid website pertinent to the medical decision of interest (pump or CGM). Adolescents and parents received password-protected, secure access to the decision for their use until a decision is reached. The platform then generated a summary report that the adolescent and parent could discuss with a diabetes nurse and then a visit with the treating endocrinologist was scheduled to conclude the SMDM intervention for that adolescent and parent.

Shared Medical Decision Making: Access to and use of multimedia decision aid websites to facilitate adolescent and parent decision making about incorporating these devices into the diabetes management regimen.

Computed p-value exceeded the .05 level of significance.

For each outcome, a linear mixed effects model was fit; with the exception of the Knowledge test where a linear model was fit. Separate models were fit for Parents and adolescents except for HbA1C. The predictor variable is treatment group (SMDM vs. UCP). Covariates are gender, age, social economic status, and family structure as determined by (number of siblings and of caregivers in the home). A random intercept was fit for each subject across the longitudinal data. To accommodate missing values multiple imputation methodology was applied to the data, resulting in five imputed datasets. For each imputed dataset, a linear mixed effects model (or linear model for Knowledge Test) was fit; the resulting five models were pooled into a final model and summary statistics are presented. A two-sided Wald's t test determined significance of covariates. The significance level was 0.05. Appropriate model diagnostics were performed to assess model fit.

UCP participants received the same clinical and educational management for candidates for insulin pump or continuous glucose monitoring that is received by similar patients who were not enrolled in this study. The respective endocrinology practices at the enrolling sites all strive to meet or exceed the current American Diabetes Association Standards for Clinical Practice in the management of type 1 diabetes in this population. Thorough patient education is the cornerstone of that care, especially regarding the incorporation of insulin pumps and continuous glucose monitors into the treatment regimen for a given patient.

Usual Clinical Practice: Diabetes management and education related to insulin pump or continuous glucose monitor as currently practiced at the enrolling site.

Participants randomized to SMDM received all components of UCP supplemented with access to the decision aid website pertinent to the medical decision of interest (pump or CGM). Adolescents and parents received password-protected, secure access to the decision for their use until a decision is reached. The platform then generated a summary report that the adolescent and parent could discuss with a diabetes nurse and then a visit with the treating endocrinologist was scheduled to conclude the SMDM intervention for that adolescent and parent.

Shared Medical Decision Making: Access to and use of multimedia decision aid websites to facilitate adolescent and parent decision making about incorporating these devices into the diabetes management regimen.

See description of analysis below.

This is a computed p-value.

For each outcome, a linear mixed effects model was fit; with the exception of the Knowledge test where a linear model was fit. Separate models were fit for Parents and adolescents except for HbA1C. The predictor variable is treatment group (SMDM vs. UCP). Covariates are gender, age, social economic status, and family structure as determined by (number of siblings and of caregivers in the home). A random intercept was fit for each subject across the longitudinal data. To accommodate missing values multiple imputation methodology was applied to the data, resulting in five imputed datasets. For each imputed dataset, a linear mixed effects model (or linear model for Knowledge Test) was fit; the resulting five models were pooled into a final model and summary statistics are presented. A two-sided Wald's t test determined significance of covariates. The significance level was 0.05. Appropriate model diagnostics were performed to assess model fit.

UCP participants received the same clinical and educational management for candidates for insulin pump or continuous glucose monitoring that is received by similar patients who were not enrolled in this study. The respective endocrinology practices at the enrolling sites all strive to meet or exceed the current American Diabetes Association Standards for Clinical Practice in the management of type 1 diabetes in this population. Thorough patient education is the cornerstone of that care, especially regarding the incorporation of insulin pumps and continuous glucose monitors into the treatment regimen for a given patient.

Usual Clinical Practice: Diabetes management and education related to insulin pump or continuous glucose monitor as currently practiced at the enrolling site.

Participants randomized to SMDM received all components of UCP supplemented with access to the decision aid website pertinent to the medical decision of interest (pump or CGM). Adolescents and parents received password-protected, secure access to the decision for their use until a decision is reached. The platform then generated a summary report that the adolescent and parent could discuss with a diabetes nurse and then a visit with the treating endocrinologist was scheduled to conclude the SMDM intervention for that adolescent and parent.

Shared Medical Decision Making: Access to and use of multimedia decision aid websites to facilitate adolescent and parent decision making about incorporating these devices into the diabetes management regimen.

Difference in post-test scores with baseline Knowledge test score as the covariate.

Computed p-value

UCP participants received the same clinical and educational management for candidates for insulin pump or continuous glucose monitoring that is received by similar patients who were not enrolled in this study. The respective endocrinology practices at the enrolling sites all strive to meet or exceed the current American Diabetes Association Standards for Clinical Practice in the management of type 1 diabetes in this population. Thorough patient education is the cornerstone of that care, especially regarding the incorporation of insulin pumps and continuous glucose monitors into the treatment regimen for a given patient.

Usual Clinical Practice: Diabetes management and education related to insulin pump or continuous glucose monitor as currently practiced at the enrolling site.

Participants randomized to SMDM received all components of UCP supplemented with access to the decision aid website pertinent to the medical decision of interest (pump or CGM). Adolescents and parents received password-protected, secure access to the decision for their use until a decision is reached. The platform then generated a summary report that the adolescent and parent could discuss with a diabetes nurse and then a visit with the treating endocrinologist was scheduled to conclude the SMDM intervention for that adolescent and parent.

Shared Medical Decision Making: Access to and use of multimedia decision aid websites to facilitate adolescent and parent decision making about incorporating these devices into the diabetes management regimen.

UCP participants received the same clinical and educational management for candidates for insulin pump or continuous glucose monitoring that is received by similar patients who were not enrolled in this study. The respective endocrinology practices at the enrolling sites all strive to meet or exceed the current American Diabetes Association Standards for Clinical Practice in the management of type 1 diabetes in this population. Thorough patient education is the cornerstone of that care, especially regarding the incorporation of insulin pumps and continuous glucose monitors into the treatment regimen for a given patient.

Usual Clinical Practice: Diabetes management and education related to insulin pump or continuous glucose monitor as currently practiced at the enrolling site.

Participants randomized to SMDM received all components of UCP supplemented with access to the decision aid website pertinent to the medical decision of interest (pump or CGM). Adolescents and parents received password-protected, secure access to the decision for their use until a decision is reached. The platform then generated a summary report that the adolescent and parent could discuss with a diabetes nurse and then a visit with the treating endocrinologist was scheduled to conclude the SMDM intervention for that adolescent and parent.

Shared Medical Decision Making: Access to and use of multimedia decision aid websites to facilitate adolescent and parent decision making about incorporating these devices into the diabetes management regimen.

Computed p-value

See analysis description below.

For each outcome, a linear mixed effects model was fit; with the exception of the Knowledge test where a linear model was fit. Separate models were fit for Parents and adolescents except for HbA1C. The predictor variable is treatment group (SMDM vs. UCP). Covariates are gender, age, social economic status, and family structure as determined by (number of siblings and of caregivers in the home). A random intercept was fit for each subject across the longitudinal data. To accommodate missing values multiple imputation methodology was applied to the data, resulting in five imputed datasets. For each imputed dataset, a linear mixed effects model (or linear model for Knowledge Test) was fit; the resulting five models were pooled into a final model and summary statistics are presented. A two-sided Wald's t test determined significance of covariates. The significance level was 0.05. Appropriate model diagnostics were performed to assess model fit.