. 2020 Jun 9;15(6):e0234161. doi: 10.1371/journal.pone.0234161

Table 6. Relationship between swimming lessons at 3y and current rhinitis at 5y in children with or without rhinitis at 3y.

		Unadjusted OR		Adjusted OR^a		Multiple imputation
		OR (95% CI)	P value	OR (95% CI)	P value	OR (95% CI)	P value
Ever rhinitis by 3y (-)	Swimming lessons at 3y (-)	1		1		1
Ever rhinitis by 3y (-)	Swimming lessons at 3y (+)	1.06 (0.66–1.72)	0.808	1.12 (0.64–1.98)	0.689	1.03 (0.62–1.70)	0.921
Ever rhinitis by 3y (+)	Swimming lessons at 3y (-)	1		1		1
Ever rhinitis by 3y (+)	Swimming lessons at 3y (+)	0.56 (0.26–1.21)	0.141	0.39 (0.14–1.14)	0.084	0.60 (0.26–1.35)	0.213

CI: confidence intervals, OR: odds ratio, 3y: age 3 years, 5y: age 5 years

Statistical analysis was conducted using multivariable logistic regression.

^aOR adjusted for gender, birth weight, sibling(s), pet ownership, environmental tobacco smoke exposure at 3y, television(TV) viewing at 3y, income, maternal education level, maternal age, maternal asthma, atopic dermatitis or rhinitis, breastfeeding before age 6 months, and BMI Z-score at 3y.