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. Author manuscript; available in PMC: 2013 Apr 4.
Published in final edited form as: Respir Care. 2009 Oct;54(10):1321–1328.

Table 2.

Odds ratios for achieving the MIP test quality goal

OR 95% CI P
Age, +10 years 1.15 1.07 – 1.23 .0001
Female gender 1.32 1.02 – 1.70 .003
Race/ethnicity .009
 Non-Hispanic White 1.00 ref
 African-American 0.79 0.65 – 0.96
 Chinese-American 1.16 0.79 – 1.69
 Hispanic 0.85 0.66 – 1.10
Study site .0003
 Winston-Salem 0.60 0.34 – 1.05
 New York 0.46 0.32 – 0.64
 Baltimore 0.71 0.44 – 1.15
 Minneapolis 0.46 0.29 – 0.73
 Chicago 0.54 0.38 – 0.77
 Los Angeles 1.00 ref
FEV1/FVC 0.28 0.10 – 0.79 .02
Health Status .04
 Better than average 0.81 0.68 – 0.97
 Average 1.00 ref
 Worse than average 1.08 0.69 – 1.71

Abbreviations: OR = odds ratio, CI = confidence interval, ref = reference group

These variables remained significant predictors in a multivariate model which included age, gender, race, study site, income, FEV1/FVC, wheeze, and health status.