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editorial
. 2017 Sep;5(17):351. doi: 10.21037/atm.2017.07.12

Table 1. Regression analysis showing the association between the selected principal components and outcome.

PC Odds ratio (95% CI) Main loadings of PC
PC1 1.65 (1.49–1.83) x1, x3, x5
PC2 0.60 (0.53–0.68) x2, x4

PC, principal component; CI, confidence interval.