Table 2.

Outcomes during the observation period in each group stratified according to sex-specific modified creatinine index quartiles (n = 3046).

	Sex-specific quartiles of modified Cr index, mg/kg/day
	Q1 (n = 759) M: –20.31 F: –17.95	Q2 (n = 763) M: 20.32–22.13 F: 17.96–19.43	Q3 (n = 762) M: 22.14–24.05 F: 19.44–20.97	Q4 (n = 762) M: 24.06– F: 20.98–	P for trend
Infection-related death	149 (19.6)	142 (18.6)	73 (9.6)	23 (3.0)	<0.001
All-cause death	594 (78.3)	471 (61.7)	305 (40.0)	133 (17.5)	<0.001

Cr, creatinine; F, female; M, male; Q, quartile of the modified Cr index. Outcomes during the observation period are expressed as number (percentage). The Cochran–Armitage test was used to determine P for the trend of outcomes. A two-tailed P value < 0.05 was considered statistically significant.