Table 3.

Association of sleep duration with asthma, allergic rhinitis, eczema

	Sleep duration, odds ratio (95% confidence interval)
	Nighttime sleep duration in weekday						Nighttime sleep duration on weekends
	< 8 vs. ≥ 9 h/day	p	p*	8–9 vs. ≥ 9 h/day	p	p*	< 8 vs. ≥ 9 h/day	p	p*	8–9 vs. ≥ 9 h/day	p	p*
Asthma
Adjusted model1	1.19 (0.67–2.12)	0.55	0.83	0.99 (0.58–1.70)	0.98	0.98	1.01 (0.63–1.64)	0.96	0.98	1.02 (0.77–1.35)	0.91	0.98
Adjusted model 2	1.22 (0.68–2.17)	0.51	0.77	1.03 (0.60–1.78)	0.91	0.96	1.03 (0.64–1.68)	0.90	0.96	1.04 (0.78–1.38)	0.81	0.96
Adjusted model 3	1.19 (0.66–2.13)	0.57	1.00	1.05 (0.61–1.80)	0.88	1.00	0.97 (0.60–1.59)	0.91	1.00	1.04 (0.78–1.38)	0.80	1.00
Allergic rhinitis
Adjusted model1	0.92 (0.62–1.37)	0.69	0.74	0.87 (0.60–1.26)	0.46	0.53	0.95 (0.69–1.33)	0.78	0.78	0.93 (0.76–1.12)	0.44	0.53
Adjusted model 2	0.92 (0.62–1.37)	0.69	0.74	0.88 (0.61–1.28)	0.51	0.58	0.96 (0.68–1.34)	0.79	0.79	0.93 (0.76–1.13)	0.46	0.57
Adjusted model 3	0.91 (0.61–1.36)	0.64	0.69	0.88 (0.61–1.28)	0.50	0.58	0.94 (0.67–1.31)	0.70	0.70	0.93 (0.76–1.13)	0.45	0.56
Eczema
Adjusted model1	1.49 (0.93–2.40)	0.10	0.11	1.17 (0.74–1.83)	0.50	0.54	1.40 (1.00–1.95)	0.05	0.07	1.03 (0.83–1.28)	0.70	0.77
Adjusted model 2	1.45 (0.90–2.34)	0.12	0.14	1.16 (0.74–1.82)	0.53	0.56	1.44 (1.02–2.02)	0.04	0.05	1.05 (0.85–1.31)	0.65	0.65
Adjusted model 3	1.45 (0.90–2.34)	0.13	0.15	1.16 (0.74–1.82)	0.52	0.56	1.40 (1.00–1.97)	0.05	0.07	1.05 (0.85–1.31)	0.65	0.65

Adjusted model 1 was adjusted for demographic characteristics, family structure and socioeconomic status

Adjusted model 2 was further adjusted for conditions of gestation, delivery and feeding besides the covariates in adjusted model 1

Adjusted model 3 was further adjusted for health problems, daily activity and behavior routine besides the covariates in adjusted model2

^*p value corrected

^aStatistically significant results (p < 0.05) are in italics