Table 3.

Predictors of MIP in Women (age adjusted)

	Coeff	95% CI		p-value
Age (yrs)	−1.05	−1.23	−0.86	<.0001
White	ref			<.0001
African-American	0.6	−3.1	4.4
Chinese	−11.0	−14.9	−7.2
Hispanic	−4.1	−8.1	−0.1
Wake Forest	9.8	0.5	19.1	0.01
Columbia	2.7	2.6	16.5
Johns Hopkins	7.7	−0.3	5.7
Minnesota	3.2	−0.5	15.9
Northwestern	3.2	−2.8	9.2
UCLA	Ref
Height (cm)	0.4	0.3	0.6	<.0001
BMI < 18.5	−2.6	−10.7	5.6	<.0001
BMI 18.5 – 25	ref
BMI 25 – 30	3.8	1.0	6.7
BMI 30 – 35	7.6	3.3	11.9
BMI > 35	10.7	6.6	14.9
FVC (liters)	8.5	6.0	11.0	<.0001
Systolic BP (mmHg)	0.1	0.01	0.1	0.03

Abbreviations: Coeff = average difference in MIP per unit change in the variable CI = confidence interval, BMI = body mass index, ref = reference group.

These variables remained significant predictors in a multivariate model which included age, race, study site, height, BMI, smoking status, FVC, and systolic blood pressure.