Table 4 Univariate meta-regression models for any sleep disorder prevalence in MENA medical students.

Study-level factors	Number of prevalence measures	Total sample size (n = 19,955)	Effect size		Univariable analyses
Study-level factors	Number of prevalence measures	Total sample size (n = 19,955)	Weighted average prevalence (%)	95% CI (%)	OR	95% CI	p-value†
Sampling
Probability based	26	10,308	24.3	17.1–32.2	Ref	Ref	Ref
Non-probability based	19	3950	37.0	23.5–51.5	1.74	0.84–3.63	0.139
NR	10	5697	26.7	15.7–38.4	1.18	0.48–2.89	0.724
Sample size
> 100	45	19,336	27.7	20.8–35.2	Ref	Ref	Ref
≤ 100	10	619	34.7	22.4–48.0	1.50	0.63–3.60	0.361
Tools
Validated	47	18,274	28.6	22.2–35.4	Ref	Ref	Ref
Non validated	6	991	15.2	7.9–24.2	0.48	0.18–1.32	0.156
NR	2	690	79.3	70.5–86.9	11.24	2.22–56.99	0.004
Response rate
< 75%	2	135	41.6	20.7–64.1	Ref	Ref	Ref
≥ 75%	6	2628	26.3	16.9–36.9	2.06	0.27–15.56	0.486
NR	47	17,192	28.8	21.7–36.4	1.01	0.35–2.93	0.980

Significant results are highlighted in bold (p-value ≤ 0.05). Associations between study-level factors⁶² and the prevalence of combined SDs is reported as odds ratios (ORs) with its corresponding 95% confidence interval.

Quick links

Search