Table 3.

Adjusted HR for incident microalbuminuria associated with each 10-cm greater waist circumference, by covariate subgroup

GroupNo. of Events/No. at RiskAdjusted HR (95% CI)aPb
All patients93/11051.34 (1.07 to 1.68)
Age (yr)
    <3023/2761.31 (0.84 to 2.04)0.890
    30 to 4036/5141.30 (0.93 to 1.81)
    >4034/2221.44 (1.03 to 1.99)
Gender
    female30/4861.65 (1.12 to 2.42)0.209
    male63/5261.23 (0.94 to 1.62)
Race
    white88/9831.35 (1.08 to 1.70)0.867
    nonwhite5/290.82 (0.20 to 3.45)
DCCT treatment group
    intensive26/5541.40 (1.03 to 1.89)0.697
    conventional67/4581.29 (0.95 to 1.75)
HbA1c (%)
    <74/2401.71 (0.81 to 3.63)0.470
    7 to 924/5271.45 (1.06 to 1.99)
    >965/2451.18 (0.88 to 1.58)
AER (mg/24 h)
    <1031/5981.23 (0.83 to 1.80)0.805
    10 to 2035/3421.29 (0.93 to 1.77)
    20 to 3027/721.45 (0.99 to 2.10)
  • a Discrete proportional hazards model includes waist circumference (scaled to 10 cm), age, gender, race, duration of diabetes, DCCT treatment group, smoking status, HbA1c, and AER, each measured at DCCT closeout.

  • b Tests hypothesis that HR differs among subgroups of covariate.