Table 2: Sensitivity analysis by the leave-one-out strategy.

Study omittedMean difference95% CI

NTG studies
None0.600.17–1.040.007
Henry et al. 20060.820.40–1.240.0001
Lee et al. 20120.570.10–1.040.02
Sugiyama et al. 19950.550.06–1.040.03
Chen et al. 20130.490.03–0.950.04
Kunimatsu et al. 20060.690.20–1.180.006
Galassi et al. 20110.64−0.02–1.31
Cellini et al. 19970.470.03–0.900.03

POAG studies
None0.630.12–1.150.02
Sugiyama et al. 19950.650.07–1.230.03
Chen et al. 20130.42−0.15–0.98
Nicolela et al. 20030.710.14–1.270.01
Cellini et al. 20120.50−0.14–1.14
Kunimatsu et al. 20060.730.17–1.290.01
Holló et al. 19980.770.26–1.2280.003

CI = confidence interval, for the influenced meta-analysis results regarding the association between plasma ET-1 and NTG, for the influenced meta-analysis results regarding the association between plasma ET-1 and POAG.