Sleep-related problems are common among patients with rheumatoid arthritis (RA) and contribute substantially to disease burden and reduced quality of life. Evidence from the World Health Organization Eastern Mediterranean Region (WHO EMRO) remains fragmented, with variability in reported prevalence, sleep constructs assessed, and associated risk factors. This study aimed to systematically review and meta-analyze the prevalence and correlates of sleep-related problems among adults with RA in WHO EMRO countries. A systematic search of PubMed, Scopus, Web of Science, Embase, CINAHL, and Google Scholar was conducted to identify observational studies reporting sleep-related outcomes among adults (≥18 years) with RA in WHO EMRO countries from inception to 27 July 2025. Study screening, data extraction, and quality appraisal using Joanna Briggs Institute (JBI) checklists were conducted primarily by a single author, with methodological oversight and consultation from senior collaborators. Eligible studies reported prevalence or sufficient data to calculate prevalence of specific sleep-related constructs, including subjective sleep quality, insomnia symptoms, daytime sleepiness, or obstructive sleep apnea. Random-effects meta-analysis (DerSimonian-Laird) was used to pool prevalence estimates and odds ratios (ORs) for associated risk factors. Heterogeneity was assessed using the I² statistic and Cochran's Q test. Subgroup analyses were conducted by sleep construct, assessment method, and country. Publication bias was evaluated using funnel plots, Egger's test, and Begg's test, with cautious interpretation due to the small number of studies. Ten studies met inclusion criteria for qualitative synthesis, and six studies (n = 2,315 participants) were included in the quantitative meta-analysis. The pooled prevalence of sleep-related problems was 60.9% (95% CI: 56.5%-65.2%), with substantial heterogeneity (I² = 88%, p < 0.001), reflecting differences in sleep constructs and assessment methods. Subgroup analyses yielded pooled prevalence estimates of 58% for insomnia symptoms, 65% for obstructive sleep apnea-related measures, and 61% for poor subjective sleep quality (PSQI above cut-off), with no statistically significant differences between subgroups. Among associated factors, depression showed the strongest association with sleep-related problems (OR = 2.65; 95% CI: 1.87-3.75), followed by pain (OR = 2.18; 95% CI: 1.68-2.84), fatigue (OR = 1.91; 95% CI: 1.45-2.52), female gender (OR = 1.67; 95% CI: 1.25-2.23), and older age (OR = 1.42; 95% CI: 1.12-1.80). Heterogeneity for risk factor analyses ranged from low to moderate. Publication bias assessments did not indicate statistically significant small-study effects but were underpowered. Sleep-related problems-assessed using heterogeneous subjective and objective measures-are highly prevalent among patients with RA in WHO EMRO countries with available data. Given substantial clinical and methodological heterogeneity and the limited number of contributing countries, findings should be interpreted as reflecting overall sleep-related burden rather than the prevalence of a single clinical disorder. Routine screening, multidisciplinary management, and culturally adapted interventions are recommended. Future large-scale, longitudinal studies using standardized diagnostic criteria across a broader range of WHO EMRO countries are needed to strengthen the evidence base. https://www.crd.york.ac.uk/PROSPERO/view/CRD420251109906, identifier CRD420251109906.
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