Table 3 Joint cross-sectional association of sleep hours and insomnia with metabolic syndrome and its components at baseline in a sample of women from the Women’s Health Initiative using logistic regression models

< 6

1.07 (0.79–1.47)

1.03 (0.79–1.33)

0.97 (0.71–1.32)

1.20 (0.94–1.54)

0.92 (0.68–1.24)

1.01 (0.79–1.29)

1.38 (1.00–1.90)

1.16 (0.89–1.51)

1.03 (0.74–1.42)

0.87 (0.67–1.13)

1.02 (0.74–1.41)

1.06 (0.82–1.36)

6- < 7

0.98 (0.81–1.19)

1.20 (0.98–1.49)

1.03 (0.88–1.27)

1.31 (1.06–1.61)

0.97 (0.81–1.16)

1.01 (0.82–1.25)

1.01 (0.83–1.23)

1.13 (0.90–1.43)

1.02 (0.84–1.24)

1.01 (0.80–1.24)

0.94 (0.78–1.13)

1.16 (0.92–1.43)

7- < 8

ref

1.22 (0.95–1.56)

ref

1.17 (0.92–1.48)

ref

1.08 (0.85–1.36)

ref

1.36 (1.05–1.76)

ref

1.09 (0.85–1.41)

ref

1.10 (0.87–1.40)

8- < 9

1.12 (0.92–1.35)

1.26 (0.86–1.84)

1.21 (1.01–1.57)

1.37 (0.95–1.99)

0.89 (0.74–1.06)

1.10 (0.77–1.59)

1.04 (0.85–1.28)

1.24 (0.83–1.84)

0.93 (0.76–1.14)

1.23 (0.83–1.81)

1.21 (1.01–1.46)

1.53 (1.06–2.20)

 ≥ 9

1.54 (1.03–2.00)

2.89 (1.39–6.01)

1.42 (1.02–1.98)

1.83 (0.87–3.86)

1.30 (0.94–1.84)

1.51 (0.71–3.24)

1.18 (0.82–1.68)

1.33 (0.61–2.91)

1.21 (0.85–1.72)

1.98 (0.79–3.57)

1.47 (1.04–2.03)

1.35 (0.54–3.41)