. 2020 Dec 31;8(12):e21965. doi: 10.2196/21965

Table 3.

For each demographic or clinical characteristic, the statistical test results on whether the data instances related to asthma hospital visits in the subsequent year and those related to no asthma hospital visit in the subsequent year had the same distribution.

Characteristics		P value for the 2005-2016 data	P value for the 2017 data
Gender		<.001 ^a, ^b	.002 ^a
Age (years)		<.001 ^c	<.001 ^c
Ethnicity		<.001 ^a	<.001 ^a
Race		<.001 ^a	<.001 ^a
Duration of asthma (years)		<.001 ^c	<.001 ^c
Insurance category		<.001 ^a	<.001 ^a
Smoking status		<.001 ^a	<.001 ^a
Comorbidity
	Sleep apnea	<.001 ^a	<.001 ^a
	Sinusitis	.006 ^a	.91^a
	Premature birth	<.001 ^a	<.001 ^a
	Obesity	<.001 ^a	.004 ^a
	Gastroesophageal reflux	<.001 ^a	<.001 ^a
	Eczema	<.001 ^a	<.001 ^a
	Cystic fibrosis	.21^a	.20^a
	Chronic obstructive pulmonary disease	<.001 ^a	<.001 ^a
	Bronchopulmonary dysplasia	<.001 ^a	.02 ^a
	Anxiety or depression	<.001 ^a	.002 ^a
	Allergic rhinitis	.38^a	.13^a
Asthma medication prescription
	Systemic corticosteroid	<.001 ^a	<.001 ^a
	Short-acting, inhaled beta-2 agonist	<.001 ^a	<.001 ^a
	Mast cell stabilizer	.29^a	>.99^a
	Long-acting beta-2 agonist	.67^a	.11^a
	Leukotriene modifier	<.001 ^a	<.001 ^a
	Inhaled corticosteroid/long-acting beta-2 agonist combination	<.001 ^a	.002 ^a
	Inhaled corticosteroid	<.001 ^a	<.001 ^a

^aP values obtained by performing the chi-square two-sample test.

^bP values <.05 marked in italics.

^cP values obtained by performing the Cochran-Armitage trend test [41].