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Survey study, 2006

How common is premenstrual syndrome and what factors put women at higher risk?

About 25% of women have PMS by objective measure, though 60% report having it. Younger, more educated, economically better-off women and those not using contraceptives had higher rates.

Moderate study design 1,395 women aged 15-49 in Southern Brazil

What they did

Cross-sectional population-based study. 1,395 women aged 15-49 in Southern Brazil (2003) completed questionnaires. PMS was defined by a score based on five symptoms that interfered with daily life, work, or school. Researchers compared the objective score with what women reported about themselves and identified risk factors.

What they found

Objective PMS prevalence was 25.2% (95% CI: 22.5-27.9). Self-reported prevalence was 60.3% (95% CI: 57.4-63.3). Main symptoms were irritability, abdominal discomfort, nervousness, headache, fatigue, and breast pain (all over 50% prevalence). Higher risk in women under 30, with better schooling, higher socioeconomic level, white skin color, using psychotropic drugs, or not using hormonal contraceptives. The test had 94% sensitivity, 51% specificity, and 62% accuracy.

What it means for you

About 1 in 4 women have PMS that impacts their daily life. Women perceive it as more common than objective measures show. Younger, more educated, and economically better-off women are more affected. Not using contraceptives is linked to higher rates.

1,395

women in study

25.2%

with PMS by objective score (95% CI 22.5-27.9)

60.3%

self-reported PMS (95% CI 57.4-63.3)

About the study

Original title
[Population study of premenstrual syndrome]
Authors
Silva CM, Gigante DP, Carret ML et al.
Journal
Revista de saude publica
Year
2006
Study design
Survey study
Participants
1,395
What was tested
None - observational study
Open access
Yes

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