Changes in menstrual symptoms and work productivity after checklist-based education for premenstrual syndrome: an 8-month follow-up of a single-arm study in Japan.

A recent systematic review of 17 studies worldwide found that the pooled prevalence of PMS was 48%, with an increasing trend over time and a wide range of prevalence between studies [ 3 ].

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Similarly, premenstrual and menstrual MDQ scores showed a trend towards improvement, but were not significant (Fig. 4 a & b).

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