Table 2.
Basal characteristics of the participants
| Characteristic | LLLT group (n = 72) | DSG/EE group (n = 63) | p value |
|---|---|---|---|
| Age, years | 25.99 ± 0.49 | 25.63 ± 0.59 | 0.64 |
| Menarche age, years | 12.89 ± 0.13 | 12.97 ± 0.16 | 0.711 |
| Gravidity | 0.25 ± 0.08 | 0.29 ± 0.11 | 0.742 |
| Parity | 0.11 ± 0.04 | 0.21 ± 0.07 | 0.22 |
| Height, cm | 162.01 ± 0.63 | 162.02 ± 0.62 | 0.993 |
| Weight, cm | 52.92 ± 0.88 | 52.37 ± 0.71 | 0.639 |
| BMI, kg/m2 | 20.18 ± 0.34 | 19.95 ± 0.24 | 0.589 |
| Systolic pressure, mmHg | 108.79 ± 1.22 | 105.48 ± 1.26 | 0.062 |
| Diastolic pressure, mmHg | 70.12 ± 0.92 | 67.74 ± 1.09 | 0.096 |
| Heart rate, times/min | 78.15 ± 1.67 | 78.71 ± 1.37 | 0.755 |
| Menstrual cycle, days | 29.52 ± 0.29 | 29.50 ± 0.36 | 0.971 |
| Menstrual bleeding, days | 6.14 ± 0.15 | 6.13 ± 0.15 | 0.964 |
| PGE2, pg/mL | 572.27 ± 18.19 | 587.10 ± 19.45 | 0.579 |
| NO, µmol/L | 8.26 ± 0.33 | 8.12 ± 0.32 | 0.772 |
| VAS scores | 5.37 ± 0.32 | 5.22 ± 0.32 | 0.737 |
LLLT, low-level light therapy; DSG/EE, desogestrel and ethinyl estradiol; BMI, body mass index; PGE2, prostaglandin E2; NO, nitric oxide; VAS, visual analog scale
Quantitative variables are described as mean ± SEM