Table 3.

Clinical risk score for persistently frequent severe exacerbations

Variable	Odds ratio, 95% confidence interval	P‐value	β	Score
ED visits or hospitalizations for asthma ≥ 2 in the past year	9.8 (2.6‐37.4)	.001	2.3	+2
Body mass index ≥ 25	3.3 (0.9‐11.8)	.064	1.2	+1
History of near‐fatal asthma	1.9 (0.3‐14.0)	.534	0.6	+1
Depression	3.0 (0.4‐24.9)	.304	1.1	+1
Obstructive sleep apnea	1.7 (0.2‐17.2)	.638	0.6	+1
Gastroesophageal reflux	2.6 (0.8‐9.2)	.131	1.0	+1

Each variable was allocated a score based on the regression coefficient (β) in a multivariate logistic regression, by rounding up β to the nearest integer.