Table 1.

Statistical overview

	Large White a		Landrace b
	mean	std	mean	std
Parity	4.14	2.87	4.70	3.03
non-censored	4.31	2.94	4.81	3.08
censored	3.55	2.52	4.09	2.62
LPL at last litter (days)	503	456	595	481
non-censored	531	467	615	490
censored	401	397	485	412
Piglets born alive per parity	10.57	1.62	9.96	1.47
non-censored	10.35	1.53	9.87	1.45
censored	11.36	1.67	10.50	1.51
Age at first farrowing (days)	378	43	367	37
non-censored	378	44	367	37
censored	380	40	370	36

^atotal number of records: 12319, number of non-censored: 9645, number of censored: 2674; ^btotal number of records: 9833, number of non-censored: 8332, number of censored: 1501