Table 3

Comparison of survival rates of extremely preterm infants in Switzerland with survival rates in several other European countries, Canada and Australia

Reference	Switzerland		EPICure	Epipage	Norway	Australia	Canadian NICUs	EPIBel	Sweden	Providence	Ulm
	Overall	CTC Range	EPICure	Epipage	Norway	Australia	Canadian NICUs	EPIBel	Sweden	Providence	Ulm
	Overall	CTC Range	23	24	27	29	26	25	28	37	32
Time period	2000–4	2000–4	1995	1995	1999–2000	1998–2002	1996–7	1999–2000	1992–8	1993–7	1996–9
Study population	pb		pb	pb	pb	pb	pb	pb	hb	hb	hb
	mc		mc	mc	mc	mc	mc	mc	mc	sc	sc
	ib/ob		ib/ob	ib/ob	ib/ob	ib/ob	ib only	ib only	ib only	ib only	ib only
Total population
Live births, n	516		1185	207	178	843	797	175	213	211	96
Survivors, n	180		314	72	99	313	338	70	140	127	74
Survivors, %	35%	16–53%	26%	35%	56%	37%	42%	40%	66%	60%	77%
22 weeks
Live births, n	18		138	16	8	144	103	2	NA	22	4
Survivors, n	0		2	0	0	0	1	0	NA	1	1
Survivors, %	0%	0%	1%	0%	0%	0%	1%	0%	NA	5%	25%
23 weeks
Live births, n	82		241	30	35	144	150	18	40	41	13
Survivors, n	4		26	0	9	23	25	1	17	19	9
Survivors, %	5%	0–20%	11%	0%	26%	16%	17%	6%	43%	46%	69%
24 weeks
Live births, n	158		382	42	64	264	242	65	70	61	31
Survivors, n	47		100	13	35	111	107	19	44	36	23
Survivors, %	30%	0–53%	26%	31%	55%	42%	44%	29%	63%	59%	74%
25 weeks
Live births, n	258		424	119	71	291	302	90	103	87	48
Survivors, n	129		186	59	55	179	205	50	79	71	41
Survivors, %	50%	38–74%	44%	50%	77%	62%	68%	56%	77%	82%	85%

CTC, centre-to-centre; hb, hospital-based; ib, inborn; mc, multicentre; ob, outborn; pb, population-based; sc, single centre.