Table 4.

Multivariable logistic regression analysis of factors associated with respiratory pathogen detection.

Variable	aOR	95% CI	p value
Region
Linxia vs. Xiamen	1.86	1.65–2.10	<0.001
Sex
Male vs. Female	1.21	1.08–1.34	<0.001
Age group
Toddler vs. Infant	1.50	1.31–1.70	<0.001
Preschool vs. Infant	1.47	1.28–1.70	<0.001
School-aged vs. Infant	0.90	0.75–1.09	0.283
Season
Summer vs. Spring	1.62	1.38–1.90	<0.001
Autumn vs. Spring	2.19	1.89–2.53	<0.001
Winter vs. Spring	1.90	1.64–2.21	<0.001

aOR, adjusted odds ratio; CI, confidence interval.

Reference groups: Xiamen (region), Female (sex), Infant (age group), and Spring (season).