Table 3.
Prevalence of anaemia, iron and folate deficiencies in the study participants at baseline and after the 3·5-month supplementation period, and the estimates of OR for prevalence of anaemia, iron and folate deficiencies, by areas with low and high iron in the groundwater, Bangladesh, April–October 2015
| High-groundwater-Fe areas(n 203) | Low-groundwater-Fe areas(n 192) | Low- v. high-groundwater-Fe areas | ||||
|---|---|---|---|---|---|---|
| % | % | P value* | OR | 95 % CI | P value† | |
| Anaemia‡ | ||||||
| Baseline | 32·5 | 40·1 | 0·142 | – | – | |
| Post | 37·9 | 32·8 | 0·295 | 0·65 | 0·40, 1·06 | 0·083 |
| P = 0·138** | P = 0·057** | |||||
| Fe deficiency§ | ||||||
| Baseline | 21·7 | 34·4 | 0·006 | – | – | |
| Post | 21·2 | 34·9 | 0·002 | 0·74 | 0·44, 1·22 | 0·234 |
| P = 0·887** | P = 0·896** | |||||
| Fe-deficiency anaemia║ | ||||||
| Baseline | 8·4 | 21·4 | 0·0003 | – | – | |
| Post | 10·3 | 14·1 | 0·283 | 0·73 | 0·35, 1·51 | 0·396 |
| P = 0·371** | P = 0·02** | |||||
| Folate deficiency¶ | ||||||
| Baseline | 7·4 | 8·9 | 0·712 | – | – | |
| Post | 1·0 | 3·1 | 0·166 | 2·83 | 0·51, 15·72 | 0·235 |
| P = 0·001** | P = 0·007** | |||||
Prevalence values within a row (between high- and low-groundwater-Fe areas) were compared with the χ2 test or Fisher’s exact test, as appropriate.
Based on logistic regression and adjusted for the dependent variable, corresponding baseline value, total number of tablets consumed, husband’s occupation and possession of cultivable land.
Hb < 11·0 g/dl.
Serum ferritin < 15·0 µg/l.
Hb < 11·0 g/dl and serum ferritin < 15·0 µg/l.
Serum folate < 4·4 ng/ml.
Prevalence values within a column (within each groundwater-Fe area) were compared by Cochran’s Q test or Fisher’s exact test, as appropriate.