Table 1.
General characteristics, menarche age & menstrual cycle patterns according to menstrual cycle regularity (n = 462).
| Variables | Total (n = 462) | Menstrual Cycle Regularity | t or χ2 (p) | ||||
|---|---|---|---|---|---|---|---|
| Regular Menstrual Cycle (n = 236) |
Irregular Menstrual Cycle (n = 226) |
||||||
| n (%) | M ± SD (Min–Max) |
n (%) | M ± SD (Min—Max) |
n (%) | M ± SD (Min–Max) |
||
| Age (years) | 21.96 ± 2.51 (18–29) |
22.05 ± 2.47 | 21.86 ± 2.54 | 0.79 (0.431) | |||
| Marital status | |||||||
| Unmarried | 457 (98.9) | 234 (99.2) | 223 (98.7) | 0.25 (0.680) a | |||
| Married | 5 (1.1) | 2 (0.8) | 3 (1.3) | ||||
| Socioeconomic status | |||||||
| High | 61 (13.2) | 30 (12.7) | 31 (13.7) | 0.79 (0.455) | |||
| Middle | 339 (73.4) | 172 (72.9) | 167 (73.9) | ||||
| Low | 62 (13.4) | 34 (14.4) | 28 (12.4) | ||||
| Job | |||||||
| Under-graduate | 390 (84.4) | ||||||
| Graduate | 72 (15.6) | ||||||
| Height (cm) | 161.48 ± 5.12 | 161.66 ± 4.92 | 161.29 ± 5.32 | 0.79 (0.431) | |||
| Weight (kg) | 53.75 ± 7.28 | 54.24 ± 7.39 | 53.24 ± 7.15 | 1.48 (0.139) | |||
| Body mass index | 20.59 ± 2.44 | 20.73 ± 2.43 | 20.45 ± 2.44 | 1.21 (0.226) | |||
| <18.5 | 75 (16.2) | 38 (16.1) | 37 (16.4) | 0.79 (0.935) a | |||
| 18.5–22.9 | 328 (71.0) | 165 (69.9) | 163 (72.1) | ||||
| 23.0–24.9 | 42 (9.1) | 23 (9.8) | 19 (8.4) | ||||
| 25.0–29.9 | 15 (3.3) | 9 (3.8) | 6 (2.7) | ||||
| ≥30.0 | 2 (0.4) | 1 (0.4) | 1 (0.4) | ||||
| Menarche age (yrs) | 12.36 ± 1.52 (8–17) |
12.15 ± 1.44 (8–17) |
12.58 ± 1.57 (10–17) |
−3.11 (0.002) | |||
| ≤12 | 90 (38.1) | 58 (25.7) | 12.75 (0.002) a | ||||
| 13–15 | 142 (60.2) | 154 (68.1) | |||||
| ≥16 | 4 (1.7) | 14 (6.2) | |||||
| No. of menses per year | 11.66 ± 1.26 (7–16) |
8.40 ± 3.10 (1–20) |
|||||
| Frequency of menses | |||||||
| Shortest | 28.57 ± 18.23 | ||||||
| Longest | 73.03 ± 49.92 | ||||||
| <21 days | 2 (0.9) | ||||||
| 21–35 days | 214 (93.0) | ||||||
| >35 days | 14 (6.1) | ||||||
| Missing | 6 | ||||||
| Volume of menses | 120.40 ± 92.37 (0–642) |
124.67 ± 88.15 | 115.93 ± 96.57 | 1.02 (0.167) | |||
| ≥100 | 246 (53.2) | 132 (55.9) | 113 (50.0) | 1.63 (0.202) | |||
| <100 | 216 (46.8) | 104 (44.1) | 113 (50.0) | ||||
| Duration of menses | |||||||
| Shortest | 4.83 ± 4.05 | ||||||
| Longest | 10.44 ± 23.02 | ||||||
| <2 days | 0 | ||||||
| 2–7 days | 218 (95.2) | ||||||
| ≥8 days | 11 (4.8) | ||||||
| Missing | 7 | ||||||
a Fisher exact test; Min–Max, minimum–maximum; M ± SD, mean ± standard deviation.