Table 3.

Leave-one-out-sensitivity analysis of prevalence of headache among patients: prevalence and 95% confidence

Study excluded	Prevalence (%)	95%CI
Singla et al., 2019	48.9	36.2–61.8
Erin K, 2017	49.4	36.6–62.3
Sayena J et al., 2015	49.9	37.2–62.6
Ito M et al., 2004	49.4	36.4–62.5
Inn-Chi L., 2018	52.2	40.8–63.4
Mainieri et al., 2015	48.5	35.3–61.9
Zhang et al., 2018	50.7	38.3–62.9
Gökhan Ö et al., 2010	48.9	36.2–61.7
Ashjazadeh N, 2015	48.5	35.8–61.4
Mameniškiene R et al., 2016	46.3	34.2–58.9
Wang et al., 2014	48.1	34.2–62.4
Slavica V. et al., 2012	48.9	35.9–62.0
Shamim R..,2018	46.5	34–3-59.1
P. Kwan et al., 2008	50.7	38.3–63.1
Yosria AHA. et al., 2017	50.4	37.9–63.0
Sayed MA et al., 2019	46.9	34.5–59.6
Fattahzadeh AG et al., 2017	46.0	35.0–57.4