Table 5.
Prevalence of anaemia, iron deficiency and iron-deficiency anaemia in the study participants without haemoglobinopathies at baseline and after the 3·5-month supplementation period, and the estimates of OR for anaemia, iron deficiency and iron-deficiency anaemia, by areas with low and high iron in the groundwater, Bangladesh, April–October 2015
| High-groundwater-Fe areas(n 165) | Low-groundwater-Fe areas(n 162) | Low- v. high-groundwater-Fe areas | ||||
|---|---|---|---|---|---|---|
| % | % | P value* | OR | 95 % CI | P value† | |
| Anaemia‡ | ||||||
| Baseline | 25·5 | 36·4 | 0·032 | – | – | |
| Post | 30·9 | 29·0 | 0·719 | 0·69 | 0·39, 1·21 | 0·193 |
| P = 0·170¶ | P = 0·070¶ | |||||
| Fe deficiency§ | ||||||
| Baseline | 23·6 | 34·6 | 0·034 | – | – | |
| Post | 21·8 | 35·8 | 0·007 | 0·74 | 0·42, 1·29 | 0·286 |
| P = 0·639¶ | P = 0·782¶ | |||||
| Fe-deficiency anaemia║ | ||||||
| Baseline | 7·9 | 21·0 | 0·001 | – | – | |
| Post | 9·7 | 13·0 | 0·386 | 0·64 | 0·27, 1·52 | 0·312 |
| P = 0·439¶ | P = 0·016¶ | |||||
Prevalence values within a column (within each groundwater-Fe area) were compared by Cochran’s Q test or Fisher’s exact test as appropriate.
Based on logistic regression and adjusted for 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.
Prevalence values within a row (between high- and low-groundwater-Fe areas) were compared by the χ2 test or Fisher’s exact test as appropriate.