Table 2. Age-specific and sex-specific anaemia prevalence using study and WHO cutoffs.
| Boys | Girls | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Participants | CNNS | WHO | Participants | CNNS | WHO | Participants | CNNS | WHO | |
| Age (years) | |||||||||
| 1 | 1014 | 20·9% (16·2–26·6) | 68·0% (62·7–72·9) | 913 | 19·0% (14·9–23·9) | 56·5% (49·9–62·8) | 1927 | 20·2% (16·8–23·7) | 62·5% (58·1–66·7) |
| 2 | 1440 | 16·9% (12·7–22·0) | 48·9% (43·4–54·3) | 1246 | 25·2% (19·1–32·5) | 53·3% (46·9–59·7) | 2686 | 20·8% (16·9–25·2) | 51·0% (46·7–55·3) |
| 3 | 1811 | 9·4% (6·9–12·6) | 36·9% (31·8–42·2) | 1549 | 17·5% (13·9–21·8) | 38·6% (33·3–44·3) | 3360 | 13·1% (10·6–15·9) | 37·7% (33·8–41·7) |
| 4 | 1940 | 9·1% (6·8–11·9) | 24·3% (20·2–28·9) | 1707 | 14·0% (10·9–17·8) | 26·6% (21·8–32·0) | 3647 | 11·6% (9·5–14·1) | 25·5% (22·1–29·1) |
| 5 | 1427 | 5·6% (3·5–8·8) | 31·5% (26·8–36·6) | 1365 | 10·4% (8·1–13·1) | 32·7% (28·2–37·5) | 2792 | 8·0% (6·3–9·9) | 32·1% (28·6–35·7) |
| 6 | 1596 | 9·5% (5·8–15·2) | 26·1% (21·5–31·4) | 1452 | 7·5% (5·5–10·2) | 28·0% (23·3–33·1) | 3048 | 8·6% (6·3–11·5) | 27·0% (23·2–31·2) |
| 7 | 1646 | 9·8% (7·3–12·9) | 22·8% (19·1–26·9) | 1465 | 8·1% (5·2–12·5) | 26·7% (20·6–33·8) | 3111 | 8·9% (6·6–11·8) | 24·8% (20·9–29·1) |
| 8 | 1788 | 5·7% (4·1–7·8) | 16·3% (13·3–19·9) | 1535 | 9·4% (6·7–12·9) | 19·4% (15·5–23·9) | 3323 | 7·5% (5·9–9·5) | 17·8% (15·3–20·6) |
| 9 | 1562 | 7·9% (5·9–10·5) | 15·3% (12·3–18·9) | 1302 | 7·7% (5·4–10·9) | 17·2% (13·8–21·2) | 2864 | 7·8% (6·2–9·8) | 16·2% (13·8–18·9) |
| 10 | 786 | 9·4% (5·8–14·8) | 17·0% (12·5–22·7) | 682 | 5·4% (3·5–8·2) | 19·4% (14·2–25·9) | 1468 | 7·5% (5·3–10·6) | 18·1% (14·6–22·2) |
| 11 | 798 | 8·1% (5·4–11·9) | 12·3% (8·9–16·7) | 766 | 7·8% (5·3–11·6) | 19·5% (14·7–25·4) | 1564 | 8·0% (5·9–10·6) | 15·8% (12·6–19·5) |
| 12 | 863 | 5·6% (3·5–8·7) | 18·1% (13·7–23·7) | 795 | 10·0% (6·9–14·2) | 39·9% (31·2–49·2) | 1658 | 7·7% (5·7–10·3) | 28·7% (24·4–33·4) |
| 13 | 806 | 7·5% (4·3–12·4) | 21·2% (16·1–27·5) | 739 | 13·0% (9·4–17·6) | 38·4% (32·2–45·1) | 1545 | 10·0% (7·5–13·2) | 29·1% (24·9–33·6) |
| 14 | 801 | 11·4% (6·7–18·8) | 16·0% (10·7–23·1) | 742 | 11·5% (6·7–19·2) | 39·9% (32·4–48·1) | 1543 | 11·5% (7·8–16·5) | 29·0% (24·1–34·4) |
| 15 | 801 | 7·3% (5·1–10·3) | 31·2% (25·6–37·4) | 785 | 11·1% (8·3–14·6) | 47·4% (40·3–54·5) | 1586 | 9·3% (7·5–11·5) | 39·8% (35·2–44·6) |
| 16 | 725 | 8·2% (5·2–12·7) | 26·5% (20·0–34·1) | 747 | 13·2% (9·7–17·8) | 48·5% (40·7–56·3) | 1472 | 10·9% (8·4–13·9) | 38·0% (32·9–43·3) |
| 17 | 637 | 5·6% (3·2–9·6) | 10·9% (7·4–15·8) | 689 | 21·5% (14·8–30·2) | 49·1% (41·1–57·2) | 1326 | 14·2% (10·2–19·5) | 31·6% (26·6–37·0) |
| 18 | 639 | 6·5% (3·8–10·7) | 8·8% (5·7–13·2) | 625 | 14·2% (10·0–19·8) | 46·9% (38·6–55·3) | 1264 | 10·2% (7·7–13·5) | 27·4% (22·4–33·0) |
| 19 | 523 | 6·4% (4·1–9·8) | 11·1% (7·1–17·1) | 503 | 15·8% (11·2–21·9) | 44·8% (37·2–52·7) | 1026 | 10·7% (8·1–14·0) | 26·6% (22·1–31·6) |
| Age groups (years) | |||||||||
| 1–4 | 6205 | 12·3% (10·9–14·9) | 40·6% (37·9–43·2) | 5415 | 18·3% (16·1–20·6) | 40·5% (37·8–43·3) | 11 620 | 15·4% (14·0–16·9) | 40·5% (38·5–42·6) |
| 5–9 | 8019 | 7·7% (6·4–9·3) | 22·2% (20·2–24·3) | 7119 | 8·6% (7·4–9·9) | 24·7% (22·4–27·2) | 15 138 | 8·2% (7·1–9·3) | 23·5% (21·8–25·2) |
| 10–14 | 4054 | 8·2% (6·6–10·1) | 17·1% (14·8–19·6) | 3724 | 9·7% (7·9–11·8) | 32·3% (28·8–35·9) | 7778 | 8·9% (7·7–10·3) | 24·5% (22·5–26·6) |
| 15–19 | 3325 | 6·8% (5·6–8·4) | 18·3% (15·9–21·0) | 3349 | 14·9% (12·7–17·5) | 47·5% (43·9–51·1) | 6674 | 11·0% (9·6–12·5) | 33·3% (30·9–35·7) |
| Overall | |||||||||
Data are n or percentage (95% CI). Weighted anaemia prevalence estimates from the CNNS sample, excluding participants with a smoking habit (n=218). CNNS=Comprehensive National Nutrition Survey.