Table 1. Demographic and clinical characteristics of individuals 18 years or older, by BMI categories.
| Under weight | Normal weight | Over Weight | Obesityclass I | Obesityclass II | Obesity class III | |
|---|---|---|---|---|---|---|
| BMI | (15.00-18.49) | (18.50-24.99) | (25.00-29.99) | (30.00-34.99) | (35.00-39.99) | (≥ 40.00) |
| Sample size | 72032 | 1103594 | 997802 | 390109 | 105731 | 35943 |
| Mean BMI (kg/m2) | 17.5* | 22.3 | 27.2* | 32* | 36.9* | 43.6* |
| Gender (% female) | 82.3%* | 61.0% | 44.8%* | 50.2%* | 62.4%* | 71.7%* |
| Mean age (yrs) | 39* | 48 | 56* | 57* | 56* | 54* |
| Age group (%) | ||||||
| 18-24 | 25%* | 10% | 3%* | 2%* | 2%* | 3%* |
| 25-34 | 28%* | 17% | 8%* | 7%* | 7%* | 8%* |
| 35-44 | 19%* | 20% | 15%* | 14%* | 14%* | 15%* |
| 45-54 | 9%* | 17% | 19%* | 19%* | 20%* | 21%* |
| 55-64 | 6%* | 13% | 21%* | 24%* | 25%* | 26%* |
| 65-74 | 6%* | 11% | 19%* | 21%* | 21%* | 19%* |
| 75+ | 8%* | 10% | 14%* | 14%* | 12%* | 8%* |
| Comorbidities (%) | ||||||
| Age group under 55 | ||||||
| Diabetes | 0.4%* | 1.1% | 3.5%* | 7.3%* | 12.1%* | 16.7%* |
| Hypertension | 1.9%* | 6.4% | 17.4%* | 27.8%* | 36.5%* | 42.5%* |
| Dyslipidemia | 1.9%* | 5.4% | 11.6%* | 13.3%* | 12.0%* | 9.4%* |
| CVD | 0.2%* | 0.6% | 1.5%* | 2.0%* | 2.2%* | 2.0%* |
| Depression | 4.7%* | 4.0% | 3.9%* | 4.6%* | 5.6%* | 6.7%* |
| Cancers | 0.5%* | 0.6% | 0.6% | 0.7% | 0.7% | 0.7% |
| Arthrosis | 0.9%* | 1.2% | 2.0%* | 2.7%* | 3.7%* | 4.9%* |
| Age group over 55 | ||||||
| Diabetes | 5.6%* | 12.5% | 19.9%* | 28.0%* | 35.0%* | 38.7%* |
| Hypertension | 38.9%* | 49.4% | 61.9%* | 72.0%* | 78.9%* | 82.8%* |
| Dyslipidemia | 18.8%* | 26.9% | 30.3%* | 29.8%* | 28.0%* | 23.1%* |
| CVD | 9.9%* | 11.4% | 13.9%* | 14.7%* | 14.6%* | 12.3%* |
| Depression | 10.4%* | 8.0% | 6.7%* | 7.2%* | 8.1% | 8.3% |
| Cancer | 6.5%* | 6.0% | 5.7%* | 5.3%* | 4.7%* | 4.1%* |
| Arthrosis | 6.5%* | 8.0% | 10.2%* | 13.1%* | 15.9%* | 18.0%* |
| No. of comorbidities | ||||||
| Age group under 55 | ||||||
| 0 | 90.5%* | 83.5% | 68.5%* | 58.1%* | 50.3%* | 45.4%* |
| 1 | 8.7%* | 14.0% | 24.0%* | 29.0%* | 31.8%* | 33.3%* |
| 2 | 0.8%* | 2.2% | 6.1%* | 9.9%* | 13.4%* | 15.5%* |
| >=3 | 0.1%* | 0.3% | 1.4%* | 3.1%* | 4.4%* | 5.8%* |
| Age group over 55 | ||||||
| 0 | 37.6%* | 28.0% | 19.3%* | 13.4%* | 9.9%* | 8.5%* |
| 1 | 37.0% | 36.6% | 35.4%* | 33.1%* | 31.0%* | 31.1%* |
| 2 | 18.4%* | 23.6% | 28.0%* | 30.8%* | 32.3%* | 33.8%* |
| >=3 | 7.1%* | 11.8% | 17.4%* | 22.8%* | 26.8%* | 26.6%* |
| Smokers (%) | 44%* | 40% | 34%* | 31%* | 31%* | 28%* |
| (subsample in which smoking information was available) | 8124 | 138211 | 135669 | 54825 | 15007 | 5013 |
*
p<0.01
†
p<0.05
‡
p<0.1, each p value refers to a t test for equality of means for each category with respect to normal weight category