Comparison of baseline characteristics among control, osteopenia and osteoporosis groups
| Characteristics | Women (n=1206) | Men (n=623) | ||||
| Control (n=338) | Osteopenia (n=544) | Osteoporosis (n=324) | Control (n=368) | Osteopenia (n=180) | Osteoporosis (n=75) | |
| Age at screening (years) | 61.5 (6.26) | 62.0 (5.74) | 64.7 (6.11)*† | 66.5 (5.84) | 65.3 (6.19)* | 66.8 (6.37) |
| BMI (kg/m2) | 25.4 (4.71) (n=327) | 24.9 (9.79)* (n=526) | 23.4 (5.42)*† (n=310) | 24.9 (2.94) (n=362) | 23.6 (2.68)* (n=178) | 23.0 (3.63)* (n=75) |
| BMD (g/cm2), median (IQR) | 1.02 (0.97–1.08) (n=337) | 0.86 (0.82–0.90)* (n=543) | 0.71 (0.66–0.75)*† (n=324) | 1.13 (1.04–1.20) (n=365) | 0.90 (0.87–0.94)* (n=179) | 0.75 (0.72–0.80)*† (n=75) |
| Alcohol intake (>1 drink per day) (%) | 0.90 (n=319) | 2.00 (n=507) | 0.70 (n=302) | 12.1 (n=347) | 16.3 (n=172) | 11.8 (n=68) |
| Current smokers (%) | 2.20 (n=315) | 1.20 (n=509) | 0.70 (n=305) | 19.6 (n=357) | 24.2 (n=178) | 25.0 (n=72) |
Data are expressed as mean (SD) unless indicated otherwise. Number of values for every single analysis was listed if there were missing values.
*Compared with control group, p<0.05.
†Compared with osteopenia group, p<0.05.
BMD, bone mineral density; BMI, body mass index.