[Retracted] Antenatal Steroid Therapy for Fetal Lung Maturation and the Subsequent Risk of Childhood Asthma: A Longitudinal Analysis

Table 2

Rates of antenatal steroid therapy administration and preterm birth by year of birth.

	Total births	Steroid administration
		Preterm		Full term		Preterm birth
	Num	Num	Rate	Num	Rate	Num	Rate
Year of birth
1989	5,874	26	109.24	18	3.19	238	40.52
1990	8,747	49	129.63	18	2.15	378	43.21
1991	8,444	58	164.31	28	3.46	353	41.80
1992	8,394	79	201.02	40	5.00	393	46.82
1993	8,287	69	195.47	36	4.54	353	42.60
1994	8,591	68	181.82	48	5.84	374	43.53
1995	8,399	78	186.16	34	4.26	419	49.89
1996	8,422	99	235.71	46	5.75	420	49.87
1997	7,905	106	261.08	60	8.00	406	51.36
1998	7,385	99	254.50	76	10.86	389	52.67
Total	80,448	731	196.35	404	5.27	3,723	46.28

Note: Rate is per 1,000 births.