Table 1—

Baseline (T1) demographic characteristics of the full and analytic study samples, MMAS, Boston, MA, 1987–2004

Baseline (T1)At-risk sample*Analytic sample
n1,7091,5641,139
Baseline characteristic
Age-group (10-year)
    40–49 years566 (33)541 (35)433 (38)
    50–59 years564 (33)529 (34)404 (35)
    60–70 years579 (34)494 (32)302 (27)
Race
    White1,629 (95)1,497 (96)1,107 (97)
    Black52 (3)43 (3)17 (1)
    Other25 (1)23 (1)14 (1)
Marital status
    Never married164 (10)153 (10)108 (10)
    Currently married1,308 (77)1,200 (77)892 (78)
    Divorced/separated182 (11)167 (11)117 (10)
    Widowed54 (3)44 (3)22 (2)
Currently employed1,338 (78)1,256 (80)981 (86)
Education
    High school or less488 (29)435 (28)264 (23)
    Some college or BA707 (41)644 (41)471 (41)
    Advanced study beyond BA513 (30)485 (31)404 (35)
Annual household income
    <$40,000640 (39)568 (37)349 (31)
    $40,000–79,999689 (42)638 (42)495 (44)
    ≥$80,000327 (20)313 (21)269 (24)
  • 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 diabetes status during follow-up. BA, bachelor of arts degree.