Background: Symptoms in multiple sclerosis (MS) can lead to different types and ranges of sexual dysfunction in MS patients. Studies in different parts of the world have reported a high range of sexual dysfunction in men with MS. This study aimed to estimate pooled prevalence of sexual dysfunction in men with MS.
Methods: The authors searched Web of Science, PubMed, Scopus, Embase, Magiran, SID, and Iran Medical Papers Database using the keywords "multiple sclerosis", "sexual dysfunctions", "men", "prevalence", and their synonyms systematically. Meta-analysis was performed using the random effects model with inverse variance-weighted method to estimate the overall prevalence of sexual dysfunction in men with MS. The protocol for this meta-analysis is available in PROSPERO (ID CRD42020199005).
Results: A total of 351 documents were identified, and 20 articles published from 1996 to 2019 were analyzed. The articles used sample sizes from 9 to 101 individuals. However, two studies conducted online used 388 and 1568 samples. Prevalence of sexual dysfunction in all studies was reported from 31 to 92%, and the pooled prevalence of sexual dysfunction in men with MS in all studies was 62.9% with a 95% confidence interval 53 to 72.7% (heterogeneity: I2 = 96.3%, Q-statistic = 12.48, P value < 0.001). According to the results of Egger's test, there was publication bias in the current study (β = 4.55, Se = 1.38, P value = 0.004).
Conclusion: Sexual dysfunction is highly prevalent in men with MS. Diagnosing sexual dysfunction in MS patients in clinics by specialists have to be considered a necessity.
Keywords: Men; Multiple sclerosis; Prevalence; Sexual dysfunction; Systematic review.