Postpartum acute renal failure: a multicenter study of risk factors in patients admitted to ICU

Annals of Intensive Care

Table 1 Patients' baseline characteristics

	All patientsn= 182	ARF groupn= 68	No ARF groupn= 114	pvalue
Age, years^a	29 [26 to 34]	29 [26 to 33]	30 [25 to 34]	0.857
Number of pregnancy^a	2 [1 to 3]	2 [1 to 3]	2 [1 to 3]	0.4
Parity^a	1 [1 to 3]	1 [1 to 2]	1 [1 to 3]	0.8
Gestational diabetes	25 (14)	10 (15)	15 (13)	0.7
Chronic hypertension	6 (3)	3 (4)	3 (3)	NA
Gestational hypertension	13 (7)	5 (7)	8 (7)	0.27
Obesity	26 (14)	14 (21)	12 (11)	0.17
Twin gestation	11 (6)	6 (9)	5 (4)	0.33
Term^a (week of gestation)	37 [33 to 39]	35 [33 to 39]	37 [32 to 39]	0.82
Antihypertensive agents before pregnancy	4 (2)	1 (1)	3 (3)	NA
Antihypertensive agents during pregnancy	41 (23)	14 (21)	27 (23)	NA
Cesarean delivery	128 (71)	45 (62)	83 (76)	0.15
Vaginal childbirth	53 (29)	23 (34)	30 (26)	0.14
SAPS II score^a	21 [14 to 31]	28 [17 to 36]	18 [13 to 24]	< 0.001
Length of stay in the ICU (days)^a	3 [2 to 4]	4 [3 to 7]	2 [2 to 3]	< 0.001

Data are N (%) for qualitative variables. ^aQuantitative variables are presented as median [interquartile range: 25th to 75th percentiles]. NA = not applicable; SAPS: simplified acute physiology score.