Table 2—

Distribution of baseline sleep duration in cohort members in the at-risk sample, those in the analytic sample, and those not in the analytic sample, MMAS, Boston, MA, 1987–2004

Sleep durationAt-risk sample*In analytic sampleNot in analytic sample
n1,5641,139425
≤5 h147 (9.4)95 (8.3)52 (12.2)
6 h309 (19.8)223 (19.6)86 (20.2)
7 h554 (35.4)423 (37.1)131 (30.8)
8 h453 (29.0)328 (28.8)125 (29.4)
>8 h101 (6.5)70 (6.2)31 (7.3)
  • Data are n (%).

  • * Men in the at-risk sample were those without diabetes at baseline (n = 1,567). Additional exclusions were for missing sleep duration (n = 2) and age (n = 1) data.

  • Men in the analytic sample were those in the at-risk sample who could be classified according to diabetes status during follow-up.