Table 1—

Subject characteristics in the analytic sample and according to weight and SDB* status

Total participantsNonoverweight (n = 679)*
Overweight/obese (n = 1,909)
No SDBSDBP valueNo SDBSDBP value
n2,5884702098731,036
Age67 (60–75)66 (59–75)75 (67–80)<0.000166 (59–74)68 (61–74)0.001
Men1,196 (46.2)136 (28.9)107 (51.2)<0.0001320 (36.7)633 (61.1)<0.0001
White race2,428 (93.8)449 (95.5)196 (93.8)0.330813 (93.1)970 (93.6)0.70
FPG test (mg/dl)96 (90–104)93 (87–98)92 (87–101)0.39096 (91–103)100 (93–108)<0.0001
OGTT (mg/dl)128 (102–162)116 (94–148)119 (96–157)0.140128 (101–162)136 (108–170)0.0002
RDI9.4 (4–19)3 (1–6)18 (13–26)<0.00015 (3–7)20 (14–32)<0.0001
BMI (kg/m2)27.6 (24.9–30.7)23 (21.8–24.2)23.3 (22–24)0.24028.3 (27–31)29.9 (28–33)<0.0001
Waist circumference (cm)98 (91–106)86 (80–92)89 (82–93)0.008100 (94–106)104 (98–112)<0.0001
  • Data are median (interquartile range) for continuous variables or n (%), unless otherwise indicated.

  • *

    * BMI <25 kg/m2.

  • BMI ≥25 kg/m2.

  • RDI: respiratory events per hours each associated with ≥3% decreases in oxyhemoglobin saturation.