Table 1.
Mean serum concentrations of retinol and β-carotene and percentage of night blindness, per trimesters of pregnancy.
| 1st Trimester | 2nd Trimester | 3rd Trimester | p-Value | |
|---|---|---|---|---|
| Retinol | ||||
| Mean/Standard deviation | 0.99 ± 0.29 | 1.07 ± 0.18 | 1.09 ± 0.31 | 0.266 |
| % of Inadequacy | 63.3 | 63.3 | 65.5 | 0.886 |
| β-Carotene | ||||
| Mean/Standard deviation | 31.06 ± 16.12 | 32.83 ± 16.12 | 31.03 ± 16.03 | 0.871 |
| % of Inadequacy | 80.0 | 66.7 | 75.9 | 0.643 |
| Night Blindness | ||||
| % Present | 56.7 | 56.7 | 58.6 | 0.708 |
The Kruskal–Wallis test was used for continuous variables and the Chi-Square test for categorical variables (p < 0.05).