Table 2.

Interaction analysis of the time to initiation of asthma control therapy, according to the study drug and different cutoffs of rhinovirus genome loads

Cutoff for rhinovirus genome load/mL	No. (%) of patients with rhinovirus genome load >cutoff	P‐value for interaction	HR (95% CI) for ≤cutoff value, prednisolone vs placebo	HR (95% CI) for >cutoff value, prednisolone vs placebo
3000	31/59 (55)	.87	1.79 (.65, 4.94)	0.60 (.27, 1.31)
5000	28/59 (48)	.04	1.68 (.68, 4.14)	0.46 (.13, 1.12)
7000	23/59 (39)	.04	1.38 (.58, 3.25)	0.38 (.14, 1.01)
9000	21/59 (36)	.02	1.39 (.61, 3.15)	0.33 (.12, .95)
11 000	19/59 (32)	.06	1.23 (.56, 2.72)	0.36 (.12, 1.11)

HR, hazard ratio; CI, confidence interval. The statistically significant cut‐off values are marked in bold.

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