Table 2.
Comparison of oxidative stress markers within groups according to low/normal and high Hb in the first trimester, among pregnant women attending a tertiary hospital in urban South India
| Hb1<110 g/l | Hb1≥120 g/l | ||||
|---|---|---|---|---|---|
| Mean or median | sd or IQR | Mean or median | sd or IQR | P value* | |
| PON-1 | |||||
| T1 | 532·9 | 144·7 | 424·7 | 163·7 | 0·002 |
| CB | 361·5 | 138·2 | 302·0 | 101·6 | 0·020 |
| MPO† | |||||
| T1 | 3·02 | 1·58–6·23 | 4·12 | 1·68–5·94 | 0·623 |
| CB | 4·12 | 0·98–7·80 | 2·35 | 0·74–5·36 | 0·525 |
| LPO† | |||||
| T1 | 0·31 | 0·09–2·33 | 1·20 | 0·25–2·00 | 0·046 |
| CB | 0·42 | 0·07–0·79 | 0·37 | 0·23–0·65 | 0·981 |
| ToAx† | |||||
| T1 | 1·53 | 1·30–2·44 | 1·47 | 1·16–2·44 | 0·918 |
| CB | 1·59 | 1·05–2·50 | 1·34 | 1·09–2·55 | 0·916 |
Hb1, Hb in T1; IQR, interquartile range (quartile 1–quartile 3); PON-1, paraoxonase-1; T1, trimester 1; CB, cord blood; MPO, myeloperoxidase; LPO, lipid peroxides; ToAx, total antioxidants.
PON-1 expressed as pmol p-nitrophenol formed/min per ml plasma; MPO expressed as U/min per ml plasma; LPO expressed as nmol malondialdehyde/ml plasma; ToAx expressed as nmol Trolox equivalent/ml plasma.
P value calculated from the independent-samples t test. P<0·05 was considered to be statistically significant.
Median and IQR with P value calculated from the Mann–Whitney U test. P<0·05 was considered to be statistically significant.