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. 2021 Feb 17;9(2):222. doi: 10.3390/healthcare9020222

Table 1.

Pooled estimates of anxiety by categorical moderator variables (subgroup analyses).

Overall Number of Studies Proportion (%) 95% CI I2 p-Value References
Anxiety prevalence 20 34.4% 29.5,39.7 99.1% <0.0001 [19,35,36,38,39,40,42,43,44,47,50,51,52,53,54,55,56,57,58,59]
Subgroup Analysis
Categories Subgroups Number of Studies Proportion (%) 95% CI I2 p-Value References
Quality Good 9 29.3 16.8,45.8 99.8% <0.0001 [19,35,38,43,44,47,56,58,59]
Medium 11 48.4 33.0,64.1 99.6% <0.0001 [36,39,40,42,50,51,52,53,54,55,57]
Continents Asia 13 30.4 20.0,43.4 99.8% <0.0001 [19,35,36,38,42,44,50,53,54,56,57,58,59]
Other 7 57.5 38.6,74.4 98.8% <0.0001 [39,40,43,47,51,52,55].
Countries China 11 25.5 16.7,36.9 99.8% <0.0001 [19,35,36,38,42,44,53,56,57,58,59]
Other 9 58.7 44.0,72.0 98.7% <0.0001 [39,40,43,47,50,51,52,54,55]
Assessment GAD 8 33.0 18.1,52.3 99.4% <0.0001 [35,38,43,44,53,54,57,59]
Other 12 43.9 28.9,60.1 99.8% <0.0001 [19,36,39,40,42,47,50,51,52,55,56,58]
Gender Female 5 34.6 20.5,52.0 99.0% <0.0001 [54,56,57,58,59]
Male 5 22.9 36.3,52.5 98.3% <0.0001 [54,56,57,58,59]
Level of Anxiety Mild 7 73.7 63.8,81.7 96.9 <0.0001 [44,53,54,55,56,57,59]
Moderate 7 23.1 16.2,31.8 97.7 <0.0001 [44,53,54,55,56,57,59]
Severe 7 7.0 4.8,11.3 92.3 <0.0001 [44,53,54,55,56,57,59]

GAD: Generalized Anxiety Disorder.