Table 2-C.
Relevant data selected from different countries
| Study ID and Country | Study design | Number of subjects and age (yrs.) | Age (yrs.) at menarche | Duration of menstrual bleeding | Entity of menstrual bleeding |
|---|---|---|---|---|---|
| 18. Elnagar RR et al. Int J Nurs Didact 2017; 7: 27-37. Mansoura, Egypt | Structured interview questionnaire. | 986 nursing students. 20.1 ±1.2 yrs. Range:18 - 24 yrs. |
11 – 13 yrs in 68.3%. | < 2 days in 0.2%. | N.A. |
| 19. Zafar et al. IJPSR, 2018.9: 2088-99.Arifwala, Pakistan | Structured questionnaire. | 723 students. Range: 10 - 19 yrs. |
12 years in 35.4%. | <3 days in 13.3%. | 22.8%, light blood loss (using 1 pad/ daily). |
| 21. Duttal BK et al. J Evid Based Med Health 2018;5: 3239-44. Guwahati, India | Hospital based observational study. | 200 adolescents | 12.3 ± 1.0 yrs. | Hypomenorrhoea was prevalent in 3.5%. | Light menstrual flow in 3.5% (number of pads changed during menstrual flow). |
| 22.Shamloo S et al. Dis Diagn 2020;9:148-52. Bandar Abbas, Iran | Cross-sectional and descriptive-analytic study, a questionnaire was used to collect the data. | 370 students. 16.2 ± 0.89 yrs. Range: 15-18 yrs. |
12.8 ± 1.0 yrs. | < 2 days in 24.6%. | N.A. |
|
23. Mao L et al. Medicine 2021; 100:16. China |
Self-designed, semi-structured questionnaire. | 24,670 adolescents < 18 yrs. |
N.A. | ≤ 1 day in 3.9%, mainly in women aged <18 yrs. | Less than 5 pads per cycle was considered as hypomenorrhea: 8.1%. |
Legend : N.A. not available.