International Journal of Endocrinology / 2014 / Article / Tab 1

Research Article

No Obesity Paradox—BMI Incapable of Adequately Capturing the Relation of Obesity with All-Cause Mortality: An Inception Diabetes Cohort Study

Table 1

Baseline characteristics of the participants with new-onset diabetes mellitus stratified by tertile of body mass index.

Tertile 1 Tertile 2Tertile 3 value*Total

Number of participants4414414401322
Median body mass index (kg·m−2)24.928.933.828.9
Minimum body mass index (kg·m−2)15.726.931.115.7
Maximum body mass index (kg·m−2)26.931.157.757.7
Categorically distributed variables
 Male 259 (0.59)213 (0.48)118 (0.27)<0.001590 (0.45)
 Smoker 67 (0.15)55 (0.13)32 (0.07)<0.001154 (0.12)
 Blood pressure lowering drug usage107 (0.24)118 (0.27)136 (0.31)<0.001361 (0.27)
 History of previous cardiovascular disease76 (0.18)90 (0.21)80 (0.18)0.957246 (0.19)
 Assigned to life style modification intervention 160 (0.36)170 (0.39)166 (0.38)0.549496 (0.38)
Continuously distributed variables
 Age (years) 55.22 (11.96)53.48 (11.69)52.25 (10.93)<0.00153.65 (11.59)
 Systolic blood pressure (mmHg)127.40 (20.77)130.02 (22.75)132.52 (21.79)<0.001129.97 (21.86)
 Total cholesterol (mmol·l−1)5.65 (1.23)5.84 (1.32)5.82 (1.21)0.0015.77 (1.26)
 High-density lipoprotein cholesterol (mmol·l−1)1.03 (0.28)1.01 (0.29)1.04 (0.26)0.0021.03 (0.28)
 Waist circumference (cm)87.87 (8.05)97.31 (6.98)106.03 (8.44)<0.00197.06 (10.87)
 Hip circumference (cm)94.80 (5.03)101.87 (4.56)112.87 (5.58)<0.001103.16 (9.75)
Outcome
 All-cause mortality 48 (10.9)33 (7.5)27 (6.1)0.236108 (8.2)
 All-cause mortality rate, per (10 000 person-year)90.8 (65.8–125.3)53.7 (35.0–82.3)64.2 (44.0–93.5)0.14069.7 (56.3–86.2)

Data are presented as mean (SD) or frequency (%) for continuously and categorically distributed variables, respectively.
Mortality is presented as per 10 000 person-years (95% CIs).
values were obtained from general linear models adjusted for age for independent variables; mortality rates were compared using Cox proportional hazard regression model.