Table 3: Crude prevalence rates of anemia and its 95% confidence intervals, according to the characteristics of the children aged 6 to 23 months receiving care at Health Units of Vitória da Conquista, Bahia, Brazil, 2010/2011 (n=366).
n (%) | Prevalence of anemia (%) | PR (crude) | 95%CI | p-valuea | |
---|---|---|---|---|---|
Gender | |||||
Female | 183 (50.0) | 27.9 | 1 | 0.66-1.29 | 0.637 |
Male | 183 (50.0) | 25.7 | 0.92 | ||
Age (months) | |||||
12 to 23 | 199 (54.4) | 18.6 | 1 | 1.38-2.80 | <0.001* |
6 to 11 | 167 (45.6) | 36.5 | 1.96 | ||
Skin color | |||||
White | 188 (51.2) | 25.0 | 1 | 0.79-1.58 | 0.518 |
Non white | 175 (48.2) | 28.0 | 1.12 | ||
Gestational age at birth (weeks) | |||||
≥37 | 338 (92.9) | 26.9 | 1 | 0.42-1.77 | 0.677 |
<37 | 26 (7.1) | 23.1 | 0.86 | ||
Weight at birth (g) | |||||
≥2500 | 326 (89.8) | 26.4 | 1 | 0.66-1.91 | 0.657 |
<2500 | 37 (10.2) | 29.7 | 1.13 | ||
Previous hospitalization | |||||
No | 249 (68.2) | 26.9 | 1 | 0.69-1.43 | 0.971 |
Yes | 116 (31.8) | 26.7 | 0.99 | ||
Weight/age index (score Z) | |||||
≥-2 | 344 (95.6) | 27.0 | 1 | 0.39-2.20 | 0.860 |
<-2 | 16 (4.4) | 25.0 | 0.92 | ||
Height/age index (score Z) | |||||
≥-2 | 311 (86.4) | 27.0 | 1 | 0.60-1.62 | 0.944 |
<-2 | 49 (13.6) | 26.5 | 0.98 | ||
Weight/height ratio (score Z) | |||||
≥-2 | 340 (94.4) | 27.1 | 1 | 0.42-2.02 | 0.842 |
<-2 | 20 (5.6) | 25.0 | 0.92 |
PR: prevalence ratio; 95%CI: 95% confidence intervals; aPearson’s chi-squared test; *statistical significance.