Table 1 General characteristics of the study population (n = 1,537) by BMI categories
From: Anemia in relation to body mass index and waist circumference among chinese women
Underweight | Normal weight | Overweight | Obese | P value | |
|---|---|---|---|---|---|
n (%) | 89 (5.8) | 834 (54.3) | 424 (27.6) | 190 (12.4) | |
Age (years) (%) | |||||
< 35 | 38.2 | 29.5 | 16.5 | 9.5 | < 0.001 |
35-44 | 13.5 | 25.4 | 21.9 | 21.6 | |
45-54 | 13.5 | 19.9 | 33.7 | 26.3 | |
≥ 55 | 34.8 | 25.2 | 27.8 | 42.6 | |
Residence | |||||
Urban city | 23.6 | 22.1 | 27.4 | 31.1 | 0.03 |
Rural city | 76.4 | 77.9 | 72.6 | 68.9 | |
Socio-economic status | |||||
Low | 26.1 | 32.4 | 33.9 | 34.0 | 0.39 |
Medium | 38.6 | 31.0 | 34.8 | 33.0 | |
High | 35.2 | 36.6 | 31.3 | 33.0 | |
Education | |||||
Low | 50.6 | 54.9 | 59.4 | 65.3 | 0.002 |
Medium | 27.0 | 32.3 | 30.9 | 21.1 | |
High | 22.5 | 12.8 | 9.7 | 13.7 | |
Hemoglobin (g/L)1 | 125.0 (14.6) | 124.9 (15.4) | 128.4 (15.0) | 131.9 (15.1) | < 0.001 |
Energy (kcal/d) | 1916 (563) | 2124 (582) | 2179 (639) | 2198 (637) | 0.001 |
Iron (mg/d) | 20.0 (7.4) | 23.4 (9.6) | 24.2 (9.8) | 23.8 (9.5) | 0.003 |
Vitamin C (mg/d) | 61 (33) | 61 (38) | 59 (39) | 60 (36) | 0.886 |