Table 3 The relative pair-wise within-person variation s̄_r, and the relative limit of longitudinal decline LLD_r for individuals with asthma and with COPD by quartiles of bronchial hypereactivity (BHR)

Program	Condition	%ΔFEV₁ (n)	s̄_r (%)	LLD_r (%)	95th percentile %ΔFEV₁
P1	Asthma	83	5.2	12.8	11.6
P4	COPD & BHRq1†	7112	7.3	17.9	18.9
P4	COPD & BHRq2	6575	5.8	14.6	15.3
P4	COPD & BHRq3	8830	4.9	12.3	12.2
P4	COPD & BHRq4	2925	4.3	10.9	10.5

†BHRq1-q4 represent quartiles of BHR; q1 is highest and q4 is lowest degree of BHR.