Relative change in 24-hour (combined daytime and nighttime) cough frequency (coughs per hour) from baseline was assessed. Assessment was done using objective digital cough monitoring. The relative change from baseline = [ (Post-baseline - Baseline) / Baseline] × 100. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo.

The E-RS:IPF is a respiratory symptom subscale of the exacerbation of chronic pulmonary disease tool (EXACT) and consists of 11 items and was developed for use in IPF. The Cough subscale includes a single item (item 2: How often did you cough today?). The possible score range is 0 (not at all) to 4 (almost constantly). Higher scores indicate more severe symptoms. The relative change from baseline values is presented below. The relative change from baseline = [ (Post-baseline - Baseline) / Baseline] × 100. A positive change from baseline indicates worsening. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

An adverse event (AE) was defined as any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. A TEAE was defined as any AE that occurs after the first dose of study drug. TEAEs included both serious and non-serious TEAEs.

The Safety population included all participants who had received at least one dose of study drug or placebo.

Relative change in 24-hour (combined daytime and nighttime) cough frequency (coughs per hour) from baseline was assessed. Assessment was done using objective digital cough monitoring. The relative change from baseline = [ (Post-baseline - Baseline) / Baseline] × 100. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo.

Responders were defined as those with ≥30%, ≥50%, or ≥75% reduction in 24-hour cough frequency from Baseline at Week 6. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

Awake cough was defined as cough that occurs between the time that the participant is awaken 24 hours after the digital cough monitor was applied for use. Assessment was done using objective digital cough monitoring. The relative change from baseline = [ (Post-baseline - Baseline) / Baseline] × 100. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

Sleep cough frequency was intended as the average coughs per hour while the participant was flagged as being asleep. Assessment was done using objective digital cough monitoring. Percent change in cough frequency (coughs per hour) from baseline was assessed. The relative change from baseline = [ (Post-baseline - Baseline) / Baseline] × 100. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The E-RS:IPF is a respiratory symptom subscale of the EXACT and consists of 11 items and was developed for use in IPF. The Cough subscale includes a single item (item 2: How often did you cough today?) with a score range of 0 (not at all) to 4 (almost constantly). The relative change from baseline values is presented below. The relative change from baseline = [ (Post-baseline - Baseline) / Baseline] × 100. A positive change from baseline indicates worsening. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The E-RS:IPF is a respiratory symptom subscale of the EXACT and consists of 11 items and was developed for use in IPF. The Cough subscale includes a single item (item 2) with a score range of 0 (not at all) to 4 (almost constantly). Responders are defined as those with at least one category reduction (improvement) by ≥1 point at Week 6. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The Total E-RS:IPF includes all 11 items from the scale and was developed for use in IPF. Items assignments to domains of the E-RS:IPF are as follows: the RS-Breathlessness domain (Items 7-11) has a score range of 0-23; the IPF-Chest domain (Items 1, 5, and 6) has a score range of 0-12; the IPF-Cough domain (Item 2) has a score range of 0-4; the IPF-Sputum domain (Items 3 and 4) has a score range of 0-8; and the E-RS:IPF total score (Items 1-11) ranges from 0-47. For each day, the sum of the item-level raw scores forms the E-RS:IPF total score. Higher scores indicate more severe symptoms. A negative change from Baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The E-RS:IPF consists of a subset of 11 items from the EXACT and was developed for use in IPF. The Breathlessness subdomain score includes 5 items (Item 7: Were you breathless today, Item 8: Describe how breathless you were today, Item 9: Were you short of breath today when performing your usual personal care activities like washing or dressing, Item 10: Were you short of breath today when performing your usual indoor activities like cleaning or household work, Item 11: Were you short of breath today when performing your usual activities outside the home such as yard work or errands), all of which required the participant to report the effect of activities on shortness of breath. The possible score range is 0 to 23. A negative change from Baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study. A higher score indicates more severe symptoms.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The E-RS:IPF is a respiratory symptom subscale of the EXACT and consists of 11 items and was developed for use in IPF. The Cough subdomain score includes single item (item 2: How often did you cough today?) The possible score range is 0 (not at all) to 4 (almost constantly). A higher score indicates more severe symptoms. A negative change from baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The E-RS:IPF is a respiratory symptom subscale of the EXACT and consists of 11 items and was developed for use in IPF. The Sputum subdomain score includes 2 items (Item 3: How much mucus (phlegm) did you bring up when coughing today? and Item 4: How difficult was it to bring up mucus (phlegm) today?), which ask about quantity and difficulty in bringing up phlegm. The possible score range is 0-8. Higher score indicates more severe symptoms. A negative change from baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The E-RS:IPF is a respiratory symptom subscale of the EXACT and consists of 11 items and was developed for use in IPF. The Chest subdomain score includes 3 items (Item 1: (Did your chest feel congested today?), Item 5: (Did you have chest discomfort today?), and Item 6: (Did your chest feel tight today?)). These questions solicited information on chest congestion, discomfort, and tightness. The possible score range is 0-12. A higher score indicates more severe symptoms. A negative change from baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The CS-NRS is a single item scale in which participants described the severity of their cough in the past 24 hours on a scale of 0 (no cough) to 10 (worst possible cough). A negative change from Baseline indicates improvement. A higher score indicates more severe symptoms. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

LCQ is a self-reporting quality of life measure of chronic cough. It consists of 19 items with a 7-point Likert response scale ranging from 1 to 7. The responses are as follows: 1 = all of the time, 2 = most of the time, 3 = a good bit of the time, 4 = some of the time, 5 = a little of the time, 6 = hardly any of the time, and 7 = none of the time. Each item is designed to assess cough symptoms and the impact of cough across three main domains, physical (8 items), psychological (7 items), and social (4 items). Domain scores are calculated as the total score from items in the domain divided by the number of items in the domain and range from 1 to 7. The LCQ total score is calculated by summing the individual domain scores and ranges from 3 to 21, with higher scores indicating better health status. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

LCQ is a self-reporting quality of life measure of chronic cough. It consists of 19 items with a 7-point Likert response scale ranging from 1 to 7. The responses are as follows: 1 = all of the time, 2 = most of the time, 3 = a good bit of the time, 4 = some of the time, 5 = a little of the time, 6 = hardly any of the time, and 7 = none of the time. Each item is designed to assess cough symptoms and the impact of cough across three main domains, physical (8 items), psychological (7 items), and social (4 items). Domain scores are calculated as the total score from items in the domain divided by the number of items in the domain and range from 1 to 7. The LCQ total score is calculated by summing the individual domain scores and ranges from 3 to 21, with higher scores indicating better health status. Percentage of LCQ Total Score responders are presented in this outcome measure. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

LCQ is a self-reporting quality of life measure of chronic cough. It consists of 19 items with a 7-point Likert response scale ranging from 1 to 7. The responses are as follows: 1 = all of the time, 2 = most of the time, 3 = a good bit of the time, 4 = some of the time, 5 = a little of the time, 6 = hardly any of the time, and 7 = none of the time. Each item is designed to assess cough symptoms and the impact of cough across three main domains, physical (8 items), psychological (7 items), and social (4 items). Domain scores are calculated as the total score from items in the domain divided by the number of items in the domain and each domain score ranges from 1 to 7. Higher scores indicate better physical, psychological, and social status respectively. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The L-IPF questionnaire is a 35-item questionnaire with two modules: symptoms (15 items) and impacts (20 items). The Impacts module yields a single Impacts score that is presented in this outcome measure. Each item's score ranges from 0-3. The score range for the L-IPF overall impacts raw sum score is 0-60, with higher scores indicating severe adverse impact. A negative change from Baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The L-IPF questionnaire is a 35-item questionnaire with two modules: symptoms (15 items) and impacts (20 items). The L-IPF Symptoms module measures the various symptoms associated with IPF. The module contains 15 items that fall into 3 domains: Dyspnea, Cough, and Energy. Each item consists of a 0-3 score range. Dyspnea consists of 7 items and has a raw sum score range of 0-21 with higher scores indicating worsening dyspnea symptoms, Cough consists of 5 items and has a raw sum score range of 0-15 with higher scores indicating worsening cough symptoms, and Energy consists of 3 items and has a raw sum score range of 0-9 with higher scores indicating worsening energy. A negative change from Baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The EQ-5D-5L is a participant reported outcome and comprises of a descriptive system with 5 dimensions (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression). The recall period was the day that the questions were being completed. Each of the 5 dimensions in the descriptive system had 5 levels: 1 = no problems, 2 = slight problems, 3 = moderate problems, 4 = severe problems, and 5 = extreme problems. Higher scores indicate worsening. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-S cough scale is a self-reported, single-item categorical scale used for assessing chronic cough. Participants rated the severity of their cough in the last week with a 4-point Likert scale (0-3: 0 = No Cough, 1 = Mild, 2 = Moderate, or 3 = Severe). Higher scores indicate worsening. A negative change from Baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-C cough is a self-reported single-item 7-point scale that assesses participants' ratings of cough over the past 7 days. Participants rated their change as -3 = much better, -2 = moderately better, -1 = a little better, 0 = no change, 1 = a little worse, 2 = moderately worse, or 3 = much worse. Higher scores indicate worsening. A negative change from Baseline indicates improvement.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-C cough is a self-reported single-item 7-point scale that assesses participants' ratings of cough over the past 7 days. Participants rated their change as -3 = much better, -2 = moderately better, -1 = a little better, 0 = no change, 1= a little worse, 2 = moderately worse, or 3 = much worse. Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-C cough is a self-reported single-item 7-point scale that assesses participants' ratings of cough over the past 7 days. Participants rated their change as -3 = much better, -2 = moderately better, -1 = a little better, 0 = no change, 1= a little worse, 2 = moderately worse, or 3 = much worse. Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-C cough is a self-reported single-item 7-point scale that assesses participants' ratings of cough over the past 7 days. Participants rated their change as -3 = much better, -2 = moderately better, -1 = a little better, 0 = no change, 1= a little worse, 2 = moderately worse, or 3=much worse. Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-S cough scale is a self-reported, single-item categorical scale used for assessing chronic cough. Participants rated the severity of their cough in the last week with a 4-point Likert scale (0-3: 0 = No Cough, 1 = Mild, 2 = Moderate, or 3 = Severe). Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-S cough scale is a self-reported, single-item categorical scale used for assessing chronic cough. Participants rated the severity of their cough in the last week with a 4-point Likert scale (0-3: 0 = No Cough, 1 = Mild, 2 = Moderate, or 3 = Severe). Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-S cough scale is a self-reported, single-item categorical scale used for assessing chronic cough. Participants rated the severity of their cough in the last week with a 4-point Likert scale (0-3: 0 = No Cough, 1 = Mild, 2 = Moderate, or 3 = Severe). Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

PGI-S IPF scale is a self-reported, single-item categorical scale that was used to assess symptoms of IPF. Participants rated the symptoms of IPF in the last week with a 4-point Likert scale (0-3: 0 = No symptoms, 1 = Mild, 2 = Moderate, or 3 = Severe). Higher scores indicate worsening. A negative change from Baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-C IPF is a self-reported, single-item 7-point scale assessing a participant's rating of cough over the past 7 days. Participants rated their change as -3 = much better, -2 = moderately better, -1 = a little better, 0 = no change, 1 = a little worse, 2 = moderately worse, or 3 = much worse. Higher scores indicate worsening. A negative change from Baseline indicates improvement.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-C IPF is a self-reported, single-item 7-point scale assessing a participant's rating of cough over the past 7 days. Participants rated their change as -3 = much better, -2 = moderately better, -1 = a little better, 0 = no change, 1= a little worse, 2 = moderately worse, or 3 = much worse. Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-C IPF is a self-reported, single-item 7-point scale assessing a participant's rating of cough over the past 7 days. Participants rated their change as -3 = much better, -2 = moderately better, -1= a little better, 0 = no change, 1= a little worse, 2 = moderately worse, or 3 = much worse. Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The PGI-C IPF is a self-reported, single-item 7-point scale assessing a participant's rating of cough over the past 7 days. Participants rated their change as -3 = much better, -2 = moderately better, -1= a little better, 0 = no change, 1= a little worse, 2 = moderately worse, or 3 = much worse. Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

PGI-S IPF scale is a self-reported, single-item categorical scale that was used to assess symptoms of IPF. Participants rated the symptoms of IPF in the last week with a 4-point Likert scale (0-3: 0 = No symptoms, 1 = Mild, 2 = Moderate, or 3 = Severe). Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

PGI-S IPF scale is a self-reported, single-item categorical scale that was used to assess symptoms of IPF. Participants rated the symptoms of IPF in the last week with a 4-point Likert scale (0-3: 0 = No symptoms, 1 = Mild, 2 = Moderate, or 3 = Severe). Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

PGI-S IPF scale is a self-reported, single-item categorical scale that was used to assess symptoms of IPF. Participants rated the symptoms of IPF in the last week with a 4-point Likert scale (0-3: 0 = No symptoms, 1 = Mild, 2 = Moderate, or 3 = Severe). Higher scores indicate worsening. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The CGI-S is a single-item measure on which the clinician rates the participant's cough. CGI-S have score range of 0-3. (0 = no cough, 1 = mild, 2 = moderate, 3 = severe). Higher scores indicate greater severity of cough. A negative change from Baseline indicates improvement. The baseline value was defined as the last non-missing observation prior to the date of the first dose of study.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The CGI-C is a one-item measure evaluating change from the initiation of treatment on a seven-point scale. CGI-C have score range 1-7 (1 = Very much improved, 2 = Much improved, 3 = Minimally improved, 4 = No change, 5 = Minimally worse, 6 = Much worse, 7 = Very much worse. Higher scores indicate greater severity of cough.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The CGI-C is a one-item measure evaluating change from the initiation of treatment on a seven-point scale. CGI-C have score range 1-7 (1 = Very much improved, 2 = Much improved, 3 = Minimally improved, 4 = No change, 5 = Minimally worse, 6 = Much worse, 7 = Very much worse. Higher scores indicate greater severity of cough. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The CGI-C is a one-item measure evaluating change from the initiation of treatment on a seven-point scale. CGI-C have score range 1-7 (1 = Very much improved, 2 = Much improved, 3 = Minimally improved, 4 = No change, 5 = Minimally worse, 6 = Much worse, 7 = Very much worse. Higher scores indicate greater severity of cough. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The CGI-C is a one-item measure evaluating change from the initiation of treatment on a seven-point scale. CGI-C have score range 1-7 (1 = Very much improved, 2 = Much improved, 3 = Minimally improved, 4 = No change, 5 = Minimally worse, 6 = Much worse, 7 = Very much worse. Higher scores indicate greater severity of cough. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The CGI-S is a single-item measure on which the clinician rates the participant's cough. CGI-S have score range 0-3 (0 = no cough, 1= mild, 2 = moderate, 3 = severe). Higher scores indicate greater severity of cough. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The CGI-S is a single-item measure on which the clinician rates the participant's cough. CGI-S have score range 0-3 (0 = no cough, 1= mild, 2 = moderate, 3 = severe). Higher scores indicate greater severity of cough. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.

The CGI-S is a single-item measure on which the clinician rates the participant's cough. CGI-S have score range 0-3 (0 = no cough, 1= mild, 2 = moderate, 3 = severe). Higher scores indicate greater severity of cough. Percentages were rounded off to the nearest decimal.

The mITT population included all participants who were randomized and had received at least one dose of study drug or placebo. Overall number analyzed is the number of participants available for outcome measure analysis.