Table 1.
Patient demographics and medical history by body mass index
| Underweight BMI (n = 341) | Normal BMI (n = 4593) | Overweight BMI (n = 5776) | Obese BMI (n = 3164) | P-value for trend | Tukey comparisons | |
|---|---|---|---|---|---|---|
| Age (years) | 55.6 (13.4) | 57.7 (12.0) | 57.2 (11.4) | 55.3 (11.8)* | <0.0001 | Underweight vs. normal, P = 0.0065; normal vs. obese, P < 0.0001; overweight vs. obese, P < 0.0001 |
| Male gender (%) | 24.6 | 50.1 | 63.0 | 53.7 | <0.0001 | |
| Diabetes (%) | 6.6 | 9.8 | 12.0 | 18.7* | <0.0001 | |
| Hypertension (%) | 37.1 | 39.8 | 46.2 | 58.8* | <0.0001 | |
| Hyperlipidaemia (%) | 48.2 | 52.3 | 55.6 | 55.7* | 0.0002 | |
| Smoking (%) | 22.0 | 16.5 | 16.3 | 16.8 | 0.4500 | |
| BMI (kg/m2) | 19.5 (0.4) | 23.1 (1.3) | 27.1 (1.4) | 34.2 (4.5)* | <0.0001 | All groups significantly different, P < 0.0001 for all |
Values are provided as the mean (standard deviation) or percentage. BMI, body mass index.
*P < 0.01 between the three groups.