Table 2: Relationship between actual BMI categories and mothers’ perception of BMI categories expressed in global terms and stratified by sex.
aWeighted Kappa index; ¶ p≤0.001Chi square test.
| Variable | Low weight n(%) | Normal n(%) | Over weight n(%) | Obesity n(%) | Kappa indexa |
| Maternal perception (all) | | | | | |
| Lowweight | 9 (69.2) | 21 (19.8) | 0 | 0 | |
| Normal | 4 (30.8) | 82 (77.4) | 15 (65.2) | 8 (36.4) | |
| Overweight | 0 | 1 (0.9) | 6 (26.1) | 7 (31.8) | |
| Obesity | 0 | 2 (1.9) | 2 (8.7) | 7 (31.8) | |
| Total | 13 | 106 | 23 | 22 | 0.459¶ |
| Maternal perception (girls) | | | | | |
| Lowweight | 4 (66.7) | 11 (19.0) | 0 | 0 | |
| Normal | 2 (33.3) | 46 (79.3) | 8 (57.1) | 5 (50.0) | |
| Overweight | 0 | 1 (1.7) | 5 (35.7) | 5 (50.0) | |
| Obesity | 0 | 0 | 1 (7.1) | 0 | |
| Total | 6 | 58 | 14 | 10 | 0.376¶ |
| Maternal perception (boys) | | | | | |
| Lowweight | 5 (71.4) | 10 (20.8) | 0 | 0 | |
| Normal | 2 (28.6) | 36 (75.0) | 7 (77.8) | 3 (25.0) | |
| Overweight | 0 | 0 | 1 (11.1) | 2 (16.7) | |
| Obesity | 0 | 2 (4.2) | 1 (11.1) | 7 (58.3) | |
| Total | 7 | 48 | 9 | 12 | 0.530¶ |