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. 2018 Feb 12;476(4):664–673. doi: 10.1007/s11999.0000000000000073

Fig. 1.

Fig. 1

The initial study cohort included 516,986 patients before propensity score matching. Treatment and control cohorts matched using propensity scores consisted of 58,201 individuals each. Patients may be excluded on the basis of multiple criteria. All included patients were assessed in univariable and multivariable logistic regression.