Efficacy, Tolerability and Safety of NVA237 in Patients With Chronic Obstructive Pulmonary Disease

Spirometry was conducted according to internationally accepted standards. Trough FEV1 referred to the mean of FEV1 at 23:15 hours and 23:45 hours after the morning dose of study drug. The baseline was defined as the average of FEV1 values taken in the clinic 45 min and 15 min prior to the first dose of randomized treatment at Visit 3. A mixed model was used and contained treatment as a fixed effect with the baseline measurement of trough FEV1, FEV1 prior to inhalation of short acting bronchodilators, and FEV1 post-inhalation of bronchodilators and stratification factors as covariates. A positive change from baseline indicates improvement.

Spirometry was conducted according to internationally accepted standards. Trough FEV1 referred to the mean of FEV1 at 23:15h and 23:45h after the morning dose of study drug. The baseline was defined as the average of FEV1 values taken in the clinic 45min and 15min prior to the first dose of randomized treatment at Visit 3. A mixed model was used and contained treatment as a fixed effect with the baseline measurement of trough FEV1, FEV1 prior to inhalation of short acting bronchodilators, and FEV1 post-inhalation of bronchodilators and stratification factors as covariates. A positive change from baseline indicates improvement.

Spirometry was conducted according to internationally accepted standards. Trough FEV1 referred to the mean of FEV1 at 23:15h and 23:45h after the morning dose of study drug. The baseline was defined as the average of FEV1 values taken in the clinic 45min and 15min prior to the first dose of randomized treatment at Visit 3. A mixed model was used and contained treatment as a fixed effect with the baseline measurement of trough FEV1, FEV1 prior to inhalation of short acting bronchodilators, and FEV1 post-inhalation of bronchodilators and stratification factors as covariates. A positive change from baseline indicates improvement.

SGRQ-C is a health related quality of life questionnaire consisting of 40 items divided into two components: 1) symptoms, 2) activity& impacts. The lowest possible value is zero and the highest is 100. Higher values corresponded to greater impairment in quality of life. An analysis model included terms for treatment, baseline total SGRQ score, FEV1 and baseline smoking status. The model also contained as fixed effects the baseline total SGRQ score, FEV1 prior to inhalation of short acting bronchodilator, FEV1 post inhalation of short acting bronchodilator and stratification factors as covariates. A negative change from baseline indicates improvement.

The total number of puffs of rescue medication used over the last 12 h recorded in the morning (nighttime use) and in the evening (daytime use) over the full 12 weeks was divided by the total number of days with non-missing rescue data to derive the mean daytime and nighttime number of puffs of rescue medication. Change from baseline in the mean daytime and nighttime number of puffs of rescue medication was analyzed as for the change from baseline in the mean daily number of puffs of rescue medication.

A night with 'no nighttime awakenings' is defined from diary data as any night where patient did not wake up due to symptoms. Total number of nights with 'no nighttime awakenings' over treatment period was divided by total number of nights where diary recordings have been made in order to derive percentage of 'no nighttime awakenings' which will be summarized by treatment and analyzed using a similar mixed model as specified for primary analysis. Diary data recorded during the 7 day run-in period was used to calculate baseline percentage of nights 'no nighttime awakenings'.

A 'day able to perform usual daily activities' was defined from diary data as any day where the patient was not prevented from performing their usual daily activities due to respiratory symptoms. The percentage of 'days able to perform usual daily activities' was derived and analyzed using a similar mixed model as specified for primary analysis as for the percentage of nights with 'no nighttime awakenings'.