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. 2007 May 3;64(10):701–707. doi: 10.1136/oem.2006.031146

Table 3 The relative pair‐wise within‐person variation s¯r, and the relative limit of longitudinal decline LLDr for individuals with asthma and with COPD by quartiles of bronchial hypereactivity (BHR).

Program Condition %ΔFEV1 (n) s¯r (%) LLDr (%) 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.