Table 3 Cox proportional hazards regression models for the association between sleep duration and incident diabetes mellitus

Sleep duration Q1 (4.00–6.57 h)

1.41*

(1.08, 1.84)

1.32*

(1.01, 1.74)

1.32*

(1.00, 1.74)

Sleep duration Q2 (6.64–7.14 h)

1.40*

(1.06, 1.85)

1.40*

(1.05, 1.85)

1.33*

(1.00, 1.76)

Sleep duration Q3 (7.21–7.57 h)

Reference

Reference

Reference

Sleep duration Q4 (7.64–8.00 h)

1.32*

(1.01, 1.72)

1.31*

(1.00, 1.72)

1.30

(0.99, 1.70)

Sleep duration Q5 (8.14–11.00 h)

1.50**

(1.11, 2.03)

1.47*

(1.09, 1.99)

1.48*

(1.09, 2.00)