Relationship between daily isoflavone intake and sleep in Japanese adults: a cross-sectional study

Nutrition Journal

Table 2 Adjusted relationship between daily intake of isoflavone and sleep duration

	Categories of isoflavone intake				p for trend^a
	Q1 (Low)	Q2	Q3	Q4 (High)	p for trend^a
No. of subjects	269	269	269	269
Sleep duration of 7–8 h/day (No.)	29	29	34	51
Model 1^b	1.00	0.93 (0.54, 1.61)^c	1.12 (0.66, 1.92)	1.64 (0.99, 2.74)	0.033
Model 2^d	1.00	0.98 (0.56, 1.70)	1.24 (0.72, 2.14)	1.92 (1.13, 3.27)^e	0.008
Model 3^f	1.00	0.94 (0.55, 1.65)	1.28 (0.73, 2.24)	1.84 (1.06, 3.18)^e	0.013

^aObtained by multiple logistic regression analysis
^bAdjusted for age, sex, and body mass index
^cAdjusted odds ratio (95 % CI) (all such values)
^dFurther adjusted for intake of vitamins B12, C, and D; and coffee consumption
^eSignificantly different than category Q1, p < 0.05 (Bonferroni corrected)
^fFurther adjusted for smoking, drinking habits, physical activity, depressive symptoms, metabolic syndrome; high-sensitivity C-reactive protein level, education level, occupation, and hypnotic drug use

ISSN: 1475-2891