Table 5. Time to first hospitalization between patients who exceed the MID and patients who don’t.

MID	Exceeding MID n (%)	HR (95%CI)	p-value	HR (95%CI)a	p-value a
SEM	31 (42)	3.08 (1.28–7.43)	0.01	3.07 (1.27–7.41)	0.01
Empirical rule effect size	25 (34)	2.24 (0.89–5.64)	0.09	2.24 (0.89–5.66)	0.09
Cohen’s effect size	24 (32)	2.03 (0.81–5.08)	0.13	1.99 (0.79–5.04)	0.15
0.5 times SD	24 (32)	2.03 (0.81–5.08)	0.13	1.99 (0.79–5.04)	0.15

HR = hazard ratio, 95%CI = 95% confidence interval, SD = standard deviation

^a adjusted for baseline PA (STEPS_baseline) and baseline disease severity (FEV1%pred_baseline)