Four criteria used for derivation of smoking abstinence status: if participant smoked any cigarettes (even a puff) in last 7 days (Yes/No); if participant used any other tobacco products in last 7 days (Yes/No); average number of cigarettes smoked per day over last 7 days (in cigarettes/day); CO level (positive: if more than 10 ppm; negative : if 0-10 ppm).Smoking abstinence status was determined as: smoking: if participant responded positively to at least 1 of above 4; quit: if participant responded negatively to all 4; unknown: if participant had missing information for all 4.

Full analysis set (FAS) included all participants who received at least 1 dose of study medication

Four criteria used for derivation of smoking abstinence status: if participant smoked any cigarettes (even a puff) in last 7 days (Yes/No); if participant used any other tobacco products in last 7 days (Yes/No); average number of cigarettes smoked per day over last 7 days (in cigarettes/day); CO level (positive: if more than 10 ppm; negative : if 0-10 ppm).Smoking abstinence status was determined as: smoking: if participant responded positively to at least 1 of above 4; quit: if participant responded negatively to all 4; unknown: if participant had missing information for all 4.

FAS included all participants who received at least 1 dose of study medication.

Four criteria used for derivation of smoking abstinence status: if participant smoked any cigarettes (even a puff) in last 7 days (Yes/No); if participant used any other tobacco products in last 7 days (Yes/No); average number of cigarettes smoked per day over last 7 days (in cigarettes/day); CO level (positive: if more than 10 ppm; negative : if 0-10 ppm).Smoking abstinence status was determined as: smoking: if participant responded positively to at least 1 of above 4; quit: if participant responded negatively to all 4; unknown: if participant had missing information for all 4.

At Week t (t = 3 to 11), the analysis population was "Observed Cases minus Week t" (OC minus Week t), that is (i-e), participants in FAS excluding missing values at the time point in question where OC was the subset of participants in FAS with observed (not missing) values.

The CO level was measured from exhaled air of the participant using CO analyzer at the last observed study visit which was the last available CO level recorded after baseline. The CO level was only measured if it was a part of the usual practice at the site.

FAS population included all participants who received at least 1 dose of study medication during study. Missing observations were not imputed and hence the participants analyzed were those without missing values (N=115).

The average number of cigarettes smoked per day over the last 7 days was collected as a part of nicotine use inventory assessment through consent record form module which included a questionnaire: Did the participant smoke any cigarettes (even a puff) in last 7 days (Yes/No) and Did the participant use any other tobacco products (example- pipe, cigars, chew, snuff) in last 7 days (Yes/No).

FAS population included all participants who received at least 1 dose of study medication during study. Missing observations were not imputed and hence the participants analyzed were those without missing values (N=518).

Prescribed status was assessed using the following question in consent record form: Would a maintenance period of the drug be prescribed to the participant after this study ends (Yes/No). Missing values were recorded as 'unknown'.

FAS population included all participants who received at least 1 dose of study medication.

FAS population included all participants who received at least 1 dose of study treatment. Missing values were excluded from analysis. The 'n' is signifying those participants who received study drug and were evaluated for this measure at the timepoint for each group respectively.

The duration was defined as the total number of dosing days from first to last day of each study treatment.

FAS population included all participants who received at least 1 dose of study treatment. Missing values were excluded from analysis.

FAS included all participants who received at least 1 dose of study medication.