Association between Serum Homocysteine Level and Obstructive Sleep Apnea: A Meta-Analysis

Figure 3

(a) Subgroup analysis and forest plot based on average AHI >= 30. (b) Subgroup analysis and forest plot based on average AHI < 30. Results are expressed as weighted mean difference (WMD) and 95% confidence intervals (95% CI).

(a)

(b)