Table 1 Distribution of demographic variables and pregnancy characteristics
From: Copper and zinc deficiency to the risk of preterm labor in pregnant women: a case-control study
Variable | Case Group No. (%) n = 42 | Control Group No. (%) n = 44 | Significance Level | |
|---|---|---|---|---|
Pregnancy Rating* | 1 | 17 (40.5) | 20 (45.5) | X2 = 0.46 P = 0.9 |
2 | 13 (31.0) | 14 (31.8) | ||
≥ 3 | 12 (28.5) | 10 (22.7) | ||
BMI* | < 18.5 (Weight Loss) | 5 (11.9) | 1 (2.27) | X2 = 3.3 P = 0.2 |
18.5–24.9 (Normal) | 32 (76.2) | 38 (86.36) | ||
25-29.9 (Overweight) | 5 (11.9) | 5 (11.37) | ||
Occupation** | Household | 37 (88.1) | 39 (88.6) | Fisher Exact Test = 2.8 P = 0.99 |
Home Jobs | 1 (2.4) | 1 (2.3) | ||
Employee | 3 (7.1) | 3 (6.8) | ||
Student | 0 (0.0) | 1 (2.3) | ||
Self-employed | 1 (2.4) | 0 (0.0) | ||
Mother’s Education** | Illiterate | 1 (2.3) | 1 (2.3) | Fisher Exact Test = 1.7 P = 0.69 |
High school | 13 (31.0) | 18 (40.9) | ||
Diploma | 17 (40.5) | 18 (40.9) | ||
University | 11 (26.2) | 7 (15.9) | ||
Income Level** | Less than enough | 4 (9.5) | 4 (9.1) | Fisher Exact Test = 0.4 P = 0.8 |
Enough for Living Expenses | 36 (85.7) | 39 (88.6) | ||
More than enough | 2 (4.8) | 1 (2.3) | ||