TABLE 3.

EFFECTS OF PERSISTENT WHEEZE ON CHANGE IN FEV₁, FVC, AND FEV₁/FVC ADJUSTED FOR BASELINE VARIABLES^*, SMOKING, AND BODY MASS INDEX

	ΔFEV1		ΔFVC		ΔFEV1/ΔFVC
Covariate	β†	95% Confidence Limits	β†	95% Confidence Limits	β†	95% Confidence Limits
Change in BMI	−25.2	−37.6, −12.7	−12.7	−28.9, 3.6	−0.5	−0.7, −0.3
Persistent wheeze‡
Current (obs = 40)	−95.4	−176.2, −14.7	−93.2	−202.7, 16.3	−1.8	−3.3, −0.3
Started (obs = 26)	−58.9	−170.5, 52.8	−66.8	−212.7, 79.0	−0.9	−3.0, 1.2
Stopped (obs = 25)	1.0	−113.0, 114.9	−1.9	−151.7, 147.9	0.8	−1.3, 2.9

For definition of abbreviations, see Table 2.

^*Stature (cm), age at time t + 1, age squared at time t + 1, and change in age.

^†Change over an average of 3.2 years.

^‡Reference is no report of persistent wheeze (312 test intervals).