Table 4.
Risk of iron deficiency states and haemoconcentration at delivery as a function of initial iron depletion and iron supplementation in pregnant women; Reus, Catalonia, Spain (n 285)
| ID at delivery | IDA at delivery | Hb > 130 g/l at delivery | |||||||
|---|---|---|---|---|---|---|---|---|---|
| OR | 95% CI | P | OR | 95% CI | P | OR | 95% CI | P | |
| Model 1 | |||||||||
| Initial ID | |||||||||
| Yes | 1·00 | Ref. | 1·00 | Ref. | 1·00 | Ref. | |||
| No | 0·28 | 0·14, 0·57 | <0·001 | 0·41 | 0·19, 0·88 | 0·019 | 8·85 | 1·18, 66·1 | 0·034 |
| Fe supplementation | |||||||||
| No | 1·00 | Ref. | 1·00 | Ref. | 1·00 | Ref. | |||
| Yes | 0·41 | 0·24, 0·70 | 0·001 | 0·80 | 0·39, 1·64 | 0·536 | 2·98 | 1·05, 8·99 | 0·040 |
| Model 2 | |||||||||
| Initial ID | |||||||||
| Yes | 1·00 | Ref. | 1·00 | Ref. | 1·00 | Ref. | |||
| No | 0·28 | 0·13, 0·58 | 0·001 | 0·49 | 0·22, 1·10 | 0·083 | 7·34 | 0·97, 55·6 | 0·054 |
| Fe supplementation | |||||||||
| No | 1·00 | Ref. | 1·00 | Ref. | 1·00 | Ref. | |||
| Yes | 0·39 | 0·22, 0·69 | 0·004 | 0·91 | 0·42, 1·96 | 0·810 | 1·42 | 0·58, 3·50 | 0·442 |
| Age of the mother (years) | 0·98 | 0·92, 1·04 | 0·425 | 1·02 | 0·94, 1·11 | 0·610 | 0·95 | 0·87, 1·04 | 0·271 |
| Parity | |||||||||
| Primipara | 1·00 | Ref. | 1·00 | Ref. | 1·00 | Ref. | |||
| Multipara | 1·21 | 0·71, 2·06 | 0·484 | 1·47 | 0·68, 3·18 | 0·330 | 0·60 | 0·28, 1·30 | 0·197 |
| Smoker | |||||||||
| No | 1·00 | Ref. | 1·00 | Ref. | 1·00 | Ref. | |||
| Yes | 0·56 | 0·30, 1·05 | 0·073 | 0·67 | 0·26, 1·70 | 0·401 | 1·99 | 0·91, 4·36 | 0·086 |
| Gestational age (weeks) | 0·79 | 0·66, 0·95 | 0·010 | 0·57 | 0·44, 0·74 | <0·001 | 1·24 | 0·95, 1·61 | 0·109 |
ID, iron depletion; IDA, iron-deficiency anaemia; Ref., reference category; SF, serum ferritin.
ID was defined as SF < 12 μg/l; IDA was defined as anaemia (Hb < 110 g/l) and ID simultaneously; risk of haemoconcentration was defined as Hb > 130 g/l.