Table 3.
Classification of 327 pregnant adolescents according to two nutritional assessment systems
| Classifications | Adolescents | |||
|---|---|---|---|---|
| CDC‐2000* | IOM‐2009 † | All | <16 years | 16–19 years |
| (n = 327) | (n = 47) | (n = 280) | ||
| N (%) ‡ | N (%) ‡ | N (%) ‡ | ||
| Underweight (n = 12) | Underweight (C) | 12 (100.0) | 1 (100.0) | 11 (100.0) |
| Normal (I) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Overweight (I) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Obese (I) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Healthy‐weight (n = 284) | Underweight (I) | 29 (10.2) | 6 (15.4) | 23 (9.4) |
| Normal (C) | 244 (85.9) | 33 (84.6) | 211 (86.1) | |
| Overweight (I) | 11 (3.9) | 0 (0.0) | 11 (4.5) | |
| Obese (I) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Overweight (n = 28) | Underweight (I) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Normal (I) | 3 (10.7) | 3 (42.9) | 0 (0.0) | |
| Overweight (C) | 24 (85.7) | 4 (57.1) | 20 (95.2) | |
| Obese (I) | 1 (3.6) | 0 (0.0) | 1 (4.8) | |
| Obese (n = 3) | Underweight (I) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Normal (I) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Overweight (I) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Obese (C) | 3 (100.0) | 0 (0.0) | 3 (100.0) | |
| P values | <0.001 § | 0.046 ¶ | <0.001** | |
C, concordant: adolescents classified in equivalent categories by both systems (CDC‐2000 and IOM‐2009); I, incorrect: adolescents classified in different categories by each system. CDC, Centers for Disease Control and Prevention; CI, confidence interval; IOM, Institute of Medicine. *CDC: underweight: <5th percentile; normal: ≥5th percentile and <85th percentile; excess weight: ≥85th percentile and <95th percentile; obese: ≥95th percentile for maternal age. †IOM (kg m−2): underweight: <18.5; normal: 18.5–24.9; overweight: 25.0–29.9; obese: ≥30. ‡Percents calculated over the total of that column. §Symmetry test: P < 0.001 – K: 0.632; 95% CI: 0.532–0.732. ¶Symmetry test: P = 0.046 – K: 0.520; 95% CI: 0.247–0.792. **Symmetry test: P < 0.001 – K: 0.651; 95% CI: 0.545–0.757.