GSTM1 and acute kidney injury: Injury level above C4 (OR = 5.796, 95% CI 1.646–20.404), grade A or B of AIS (OR = 10.540, 95% CI 2.995–37.090), lower Hb (OR = 0.965, 95% CI 0.936–0.995), and higher PLR (OR = 1.006, 95% CI 1.002–1.011), as well as NPAR (OR = 1.172, 95% CI 1.022–1.344) predicted an increased risk of ARF.