Table 1. Some sociodemographic and clinical characteristics of the participants.
| Participants (132) |
Mg++ group (66) |
Placebo group (66) |
p-value | |
|---|---|---|---|---|
| Age (years) | 26.6± 5.5 | 26.2± 4.9 | 27.0.± 6.0 | 0.407 |
| Years of study | 4.8± 1.1 | 5.0± 1.2 | 4.7± 1.0 | 0.204 |
| Currently employed | 68 (51.5%) | 36 (54.5%) | 32 (48.4%) | 0.486 |
| Income per capita monthly (US$) | 144 ± 65 | 153 ±40 | 135 ±65 | 0.107 |
| Primipara | 51 (38.6%) | 30 (45.4%) | 21 (31.8%) | 0.568 |
| Body Mass Index (BMI) | 25.9±5.2 | 26.5± 5.8 | 25.2±4.4 | 0.173 |
| Gestational age (weeks) | 15.0±3.5 | 15.0± 3.2 | 15.1± 3.9 | 0.576 |
| Number of cramps per week | 4.8±2.8 | 4.1±2.9 | 5.5±3.0 | 0.300 |
| Serum magnesium level < 1.8 mg/dl | 66 (50.0%) | 32 (48.4%) | 34 (51.5%) | 0.431 |