Assessing metered-dose inhaler technique: comparison of observation vs. patient self-report.
The purpose of this study was to develop and determine the validity of a patient-completed questionnaire that assesses metered-dose inhaler (MDI) technique. Self-reported MDI technique was compared to observed technique. The questionnaire included nine steps for MDI use, with two to three response choices for each step. A total of 159 patients were studied. Direct observation revealed that greater than 82% of patients exhibited inadequate technique (more than two out of nine steps incorrect). The mean percentage agreement between the questionnaire and observation was 77.4%. Questionnaire results where in higher agreement with observation when patients performed correct MDI technique.
Erickson
S R
SR
University of Michigan, College of Pharmacy, Ann Arbor 48109-1065, USA. serick@umich.edu
Horton
A
A
Kirking
D M
DM
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D009330:Nebulizers and Vaporizers; D010361:Patients; D012646:Self Administration / Q000379:methods*; D011795:Surveys and Questionnaires / Q000592:standards*