Table 4—

Incident diabetes by baseline sleep duration, MMAS, Boston, MA, 1987–2004

Sleep durationStatistical model
a. Age adjustedb. Multivariate adjusted*c. Multivariate adjusted* plus total testosterone quartiled. Multivariate adjusted* plus cortisol quartile
≤5 h2.60 (1.28–5.27)1.95 (0.95–4.01)1.51 (0.71–3.19)1.71 (0.81–3.59)
6 h1.93 (1.06–3.50)1.95 (1.06–3.58)2.03 (1.10–3.72)1.95 (1.06–3.58)
7 h1.001.001.001.00
8 h1.40 (0.78–2.53)1.41 (0.78–2.55)1.32 (0.73–2.39)1.40 (0.78–2.54)
>8 h3.63 (1.79–7.38)3.12 (1.53–6.37)2.81 (1.34–5.90)3.03 (1.44–6.37)
  • Data are RR (95% CI). n = 1,139.

  • * Adjusted for 10-year age-group, hypertension, current smoking, self-rated health status, waist circumference, and education (all covariates measured at baseline).