Table 1. Comparison of the demographic characteristics of the two study groups.
| Variable |
Folic acid
Mean (SD) |
Placebo
Mean (SD) |
Statistical index |
| Age (years) | 52.94 (3.37) | 53.05 (3.40) | t=-0.14, P=0.88,df= 68 |
| Gravidity | 4.88 (2.33) | 4.82 (2.09) | t=0.108, P=0.91, df=68 |
| Parity | 4.11 (1.92) | 4.05 (1.74) | t=0.130, P=0.89, df=68 |
| Duration of menopause (months) | 38.31 (27.01) | 38.48 (25.53) | t=0.184, P=0.85, df=68 |
| Systolic blood pressure | 110.57 (10.83) | 106.28 (10.59) | t=1.67, P=0.09, df=68 |
| Diastolic blood pressure | 69.71 (9.28) | 66 (10.05) | t=1.61, P=0.11, df=68 |
| BMI | 27.40 (4.74) | 26.54 (4.22) | t=0.805, P=0.42, df=68 |
| N(%) | N(%) | ||
| Menopause | |||
| Natural | 27 (77) | 29 (83) | χ 2 =0.357 P=0.55, df=1 |
| Induced | 8 (23) | 6 (17) | |
| Primary | 20 (57) | 22 (62) | |
| Education level | |||
| Secondary | 1 (3) | 2 (6) | Z=-0.459† P=0.64 |
| Collage | 3 (8) | 1 (3) | |
| University | 11 (32) | 10 (29) | |
| Occupation | |||
| Housewife | 23 (65) | 25 (72) | χ 2 =0.813 P=0.66, df=2 |
| Employee | 10 (29) | 7 (20) | |
| Retired | 2 (6) | 3 (8) | |
| Sufficient income | |||
| Yes | 18 (50) | 16 (44) | Z=-0.052† P=0.95 |
| No | 3 (9) | 7 (21) | |
| Somewhat | 14 (41) | 12 (35) | |
| Sports | |||
| Never | 19 (53) | 17 (47) | Z=-0.717 P=0.47 |
| Sometimes | 10 (29) | 9 (26) | |
| Often | 4 (12) | 5 (15) | |
| Always | 2 (6) | 4 (12) | |
| Marital status | |||
| Single | 1 (3) | 2 (6) | χ 2 =0.496 P=0.78, df=2 |
| Married | 29 (83) | 27 (77) | |
| Divorced | 0 | 0 | |
| Widow | 5 (14) | 6 (17) |
†For the considered variables U-Mann Whitney test was used