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Table 3 Odds ratios (95% confidence intervals) for risk of 3-year-old children sleeping less than 10 h per night according to quartile of maternal fermented food intake during pregnancy (n = 64,200)

From: Association between maternal fermented food consumption and child sleep duration at the age of 3 years: the Japan Environment and Children’s Study

 

Quartile of fermented food intake

p-value

1 (low)

2

3

4 (high)

for trend

Median intake of miso, g/day

10.0

32.1

88.4

225.0

 

 Total, n

16,401

13,720

17,988

16,091

 

 Cases, n

1,238

943

1,279

1,219

 

 Crude odds ratio

1.00 (Ref.)

0.90 (0.83–0.99)

0.94 (0.86–1.02)

1.00 (0.93–1.09)

0.809

 Adjusted odds ratio

1.00 (Ref.)

0.91 (0.84–1.00)

0.95 (0.87–1.03)

1.00 (0.92–1.09)

0.863

Median intake of yogurt, g/day

8.0

25.7

60.0

120.0

 

 Total, n

16,933

14,471

14,210

18,586

 

 Cases, n

1,236

1,064

1,042

1,337

 

 Crude odds ratio

1.00 (Ref.)

1.01 (0.93–1.10)

1.01 (0.92–1.10)

0.98 (0.91–1.07)

0.689

 Adjusted odds ratio

1.00 (Ref.)

1.04 (0.95–1.13)

1.04 (0.95–1.14)

1.02 (0.94–1.11)

0.674

Median intake of cheese, g/day

0.0

1.3

4.3

10.0

 

 Total, n

15,404

16,357

16,912

15,527

 

 Cases, n

1,190

1,231

1,212

1,046

 

 Crude odds ratio

1.00 (Ref.)

0.97 (0.90–1.06)

0.92 (0.85–1.00)

0.86 (0.79–0.94)

<0.001

 Adjusted odds ratio

1.00 (Ref.)

0.98 (0.90–1.06)

0.93 (0.85–1.01)

0.85 (0.78–0.94)

<0.001

Median intake of natto, g/day

0.0

3.3

10.7

25.0

 

 Total, n

11,477

15,293

22,114

15,316

 

 Cases, n

869

1,151

1,557

1,102

 

 Crude odds ratio

1.00 (Ref.)

0.99 (0.91–1.09)

0.93 (0.85–1.01)

0.95 (0.86–1.04)

0.089

 Adjusted odds ratio

1.00 (Ref.)

1.00 (0.91–1.10)

0.93 (0.86–1.02)

0.95 (0.86–1.05)

0.133

  1. Adjusted for energy intake, maternal age during pregnancy, previous childbirth, body mass index (BMI) at 1 month after childbirth, maternal education level, annual household income, marital status at 6 months after childbirth, alcohol intake at 1 month after childbirth, smoking status at 1 month after childbirth, employment status at 1 year after childbirth, sex of the child, attendance at nursery (at 1 year of age), the location where the child slept at night (at 1 year of age), birth weight, gestational age, eating dairy products at 3 years of age, presence of any disease (up to 3 years of age), and date (month) of birth