TABLE 2.

Characteristics of the study population and exposure rates to diuretics.

	Study population n = 86,032	Gestational age [weeks of gestation]
		[24–27] n = 5,775	[28–31] n = 10,426	[32–36] n = 28,855	≥37 n = 40,976
Male, n (%)	46,920 (54.5)	3,045 (52.7)	5,599 (53.7)	15,372 (53.3)	22,904 (55.9)
Birth weight (kg), mean (±SD)	2.45 (0.95)	0.81 (0.19)	1.31 (0.32)	2.15 (0.51)	3.19 (0.59)
Length of stay (days), mean (±SD)	15.8 (20.8)	48.5 (40.4)	34.7 (24.5)	15.0 (13.6)	6.8 (8.8)
Mortality, n (%)	2,509 (2.9)	1,139 (19.7)	370 (3.5)	386 (1.3)	614 (1.5)
Exposure to diuretics, n (%)	7,313 (8.5)	3,039 (52.6)	1,721 (16.5)	1,022 (3.5)	1,531 (3.7)
[CI 95%]	[8.3; 8.7]	[51.3; 53.9]	[15.8; 17.2]	[3.3; 3.8]	[3.6; 3.9]

CI, confidence interval; SD, standard deviation.