Table 2.

Association between education and progressive supranuclear palsy in case-control studies

Study	Cases, n	Controls, n	Education, years	Odds ratio	95% confidence interval	p value
Davis et al. [52]	50	50	≥ 12	3.10	N/A	< 0.050
Golbe et al. [35]	91	104	≥ 12	0.35	0.12–0.95	0.022
Vidal et al. [48]	79	79	< 9	2.60	1.30–5.60	0.010
Litvan et al. [51]	284	284	≥ 16	0.42	0.27–0.64	< 0.001
Kelly et al. [54]	67	68	≥ 12	0.30	N/A	0.010