OBJECTIVES : This study aimed to develop, validate and implement the medication adherence questionnaire in local language for chronic respiratory diseases.

METHODS : The questionnaire was developed based on an extensive literature review and experts’ opinion. The questionnaire was then subjected for validation and translated to the local vernacular from English and it was back translated to kannada. The internal consistency of the questions in the questionnaire and test –retest reliability of the questionnaire was validated. All the patients who satisfied the study criteria were included in the study after taking informed consent. The medication adherence questionnaire was administered to the patients at the baseline, first follow up and the response were obtained and documented. Responses of the patient to the medication adherence were compared between baseline and follow up and also between asthma and COPD patients. Medication adherence scores are expressed as means ± standard deviations, means were compared using independent t- test. The factors affecting the medication adherence of the patients were assessed by using chi square test.

RESULTS : The overall content validity score and the item content validity index (I-CVI) of the prepared questionnaire was 3.83 and 95.5% respectively. Simplicity was high among all the parameters (96.8%) in the scale content validity index(S-CVI). The internal consistency of the questionnaire measured using Cronbach’s alpha was found 0.9. A total of 46 patients completed, 5 were drop out. Asthma (21.95%) and COPD patients (48.75%) group majority were male patients. Majority of asthma patient (34.14%) were non alcoholic and non smoker, whereas majority of COPD patients were (39.02%) were alcoholic and smoker. The questionnaire analysis was able to measure the change in medication adherence.

CONCLUSIONS : The prepared medication adherence questionnaire was capable to assess the change in medication adherence. COPD patient were having better adherence than asthma patients.