Regional distribution of anaemia prevalence among child under 5 years in Western China* (n=52†)
| Western China | n (pooled n) | Total prevalence, % | Range of reported prevalence in child by regional distribution, % | |||
| Median (IQR) | Range | Rural (n=26) | Urban (n=6) | |||
| Province | Qinghai | 5 (15430) | 67.80% (64.70–72.75) | 59.10%–75.74% a21, a26, a46, a48, a51 | 59.10%–72.75% a46, a51 | — |
| Shaanxi | 8 (12518) | 46.20% (35.12–49.31) | 32.00%–54.26% a6, a15, a23, a25, a32, a36, a45, a47 | 32.00%–54.26% a6, a23, a25, a32, a36, a45, a47 | — | |
| Guizhou | 7 (37538) | 37.50% (31.24–50.63) | 14.90%–57.60% a9, a11, a13, a17, a34, a41, a51 | 27.20%–53.67% a11, a13, a41, a51 | — | |
| Yunnan | 5 (49298) | 29.55% (14.58–35.20) | 13.22%–47.15% a8, a18, a20, a33, a35 | 34.58% a8‡ | 2.29% a8‡ | |
| Gansu | 7 (22512) | 25.69% (11.70–42.52) | 3.69%–74.30% a5, a30, a31, a37, a41, a50§, a51 | 3.69%–47.13% a5, a30, a37, a41, a51 | — | |
| Sichuan | 7 (28385) | 17.06% (14.57–37.67) | 6.16%–51.90% a1, a2, a4, a14, a41, a49§, a51 | 7.40%–51.90% a1, a2, a41, a51 | 4.29%–17.06% a2, a4 | |
| Autonomous regions | Xinjiang | 6 (41014) | 45.00% (27.49–57.11) | 9.81%–67.30% a3, a16, a22, a29, a41, a51 | 9.91%–57.79% a3, a16, a29, a41, a51 | 9.68%–44.00% a3, a16, a29 |
| Inner Mongolia | 4 (16554) | 29.17% (13.78–42.55) | 5.33%–45.00% a27, a38, a41, a51 | 16.60%–45.00% a38, a41, a51 | — | |
| Tibet | 1 (540) | — | 41.70% a40‡ | 41.70% a40‡ | — | |
| Ningxia | 2 (8758) | — | 26.4%–44.46% a12, a51** | 26.4% a12‡ | — | |
| Guangxi | 3 (15515) | — | 15.60%–45.76% a41, a42, a51†† | 15.60%–45.76% a41, a42, a51ⅵ | — | |
| Municipality | Chongqing | 2 (7417) | — | 51.7%–53.20% a19, a51** | — | — |
| One research including all the 12 provinces | 1 (2380) | — | 49.00% a54‡ | 49.00% a54‡ | — | |
| In total | 52 (176462) | 42.54% (25.62–52.56) | 3.69%–75.74% a1-a6, a8-a23, a25, a26, a28-a38, a40-a55 | 41.72% (26.88–48.90); 3.69%–72.75%¶ | 10.50% (6.99–23.12); 2.29%–44.00% a2-a4, a8, a16, a28, a29 | |
Notes: for references see appendix reference list.
*Anaemia is defined by the WHO standard (WHO, 2011)16 and the Chinese standard (the China Pediatrics Association, 2010)15 as a haemoglobin level is below 145 g/L for children aged 0–29 days, below 90 g/L for children aged 1–3 months, below 100 g/L for children aged 4–6 months, or below 110 g/L for children aged 6–59 months is considered anaemia.
†Three of the total 55 studies are not included in this table because they do not report overall anaemia prevalence by province.
‡Reported as point estimate only, as n=1.
§Affected by Wenchuan earthquake.
¶The references as follows: a1–a3, a5, a6, a8, a11–a13, a16, a23, a25, a29, a30, a32, a36–a38, a40–a42, a45–a47, a51, a54.
**Reported as range only, as n=2.
††Reported as range only, as n=3.