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Table 3 Multinomial logistic regression of sleep duration (N = 1578)

From: Relationship between sleep and obesity among U.S. and South Korean college students

 

All

Men

Women

Short sleep

AOR (95% CI)a

Long sleep

AOR (95% CI)a

Short sleep

AOR (95% CI)a

Long sleep

AOR (95% CI)a

Short sleep

AOR (95% CI)a

Long sleep

AOR (95% CI)a

Race/nationality

 Whites

Reference

Reference

Reference

Reference

Reference

Reference

 Blacks

1.74 (1.20, 2.51)**

0.85 (0.43, 1.69)

2.22 (1.34, 3.68)**

0.93 (0.35, 2.46)

1.28 (0.70, 2.35)

0.59 (0.19, 1.84)

 Koreans

0.97 (0.69, 1.36)

0.78 (0.43, 1.41)

1.05 (0.68, 1.61)

0.79 (0.38, 1.65)

0.91 (0.50, 1.68)

0.52 (0.16, 1.65)

BMI

 Underweight

0.86 (0.39, 1.93)

1.44 (0.39, 5.30)

0.69 (0.16, 2.94)

0.25 (0.17, 3.95)

1.00 (0.36, 2.77)

2.40 (0.56, 10.36)

 Normal weight

Reference

Reference

Reference

Reference

Reference

Reference

 Overweight

1.52 (1.16, 1.99)**

1.17 (0.67, 2.03)

1.48 (1.06, 2.07)*

1.10 (0.56, 2.19)

1.58 (0.97, 2.56)

1.42 (0.53, 3.78)

 Obesity

1.67 (1.16, 2.41)**

1.79 (1.03, 3.43)*

1.61 (1.04, 2.74)*

1.68 (0.69, 4.09)

1.84 (1.07, 3.16)*

1.74 (0.62, 4.86)

 

Whites

Blacks

Koreans

Short sleep

AOR (95% CI)a

Long sleep

AOR (95% CI)a

Short sleep

AOR (95% CI)a

Long sleep

AOR (95% CI)a

Short sleep

AOR (95% CI)a

Long sleep

AOR (95% CI)a

Gender

 Men

Reference

Reference

Reference

Reference

Reference

Reference

 Women

1.36 (0.72, 2.56)

1.20 (0.42, 3.44)

0.95 (0.61, 1.47)

1.12 (0.44, 2.83)

1.08 (0.72, 1.63)

0.80 (0.34, 1.90)

BMI

 Underweight

0.82 (0.04, 18.08)

1.45 (0.91, 4.27)

0.22 (0.02, 2.09)

3.14 (0.28, 34.53)

1.19 (0.44, 3.19)

1.40 (0.26, 7.46)

 Normal weight

Reference

Reference

Reference

Reference

Reference

Reference

 Overweight

1.51 (0.77, 2.97)

1.73 (0.60, 5.02)

1.70 (1.06, 2.72)*

1.30 (0.43, 3.92)

1.30 (0.86, 1.97)

0.73 (0.28, 1.89)

 Obesity

1.67 (0.71, 3.92)

2.63 (0.71, 9.77)

1.68 (1.01, 2.84)*

2.25 (0.80, 6.27)

1.10 (0.43, 2.77)

0.46 (0.05, 4.00)

  1. Sleep duration classified into short sleep (< 7 h/night), normal sleep (7–9 h/night), and long sleep (> 9 h/night)
  2. Underweight (BMI < 18.5), normal weight (18.5 ≤ BMI < 25.0), overweight (25.0 ≤ BMI < 30.0), and obesity (BMI ≥ 30.0) for whites and blacks. Underweight (BMI < 18.5), normal weight (18.5 ≤ BMI < 23.0), overweight (23.0 ≤ BMI < 25.0), and obesity (BMI ≥ 25.0) for Koreans
  3. aOdds ratio adjusted for age, annual family income, days of vigorous-intensity activity, days of moderate-intensity activity, current smoking status, days of alcohol use, having trouble sleeping, sleep disorder, and depression
  4. AOR adjusted odds ratio, CI confidence interval
  5. *p < .05; **p < .01
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BMC Public Health

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