Table 1.

Descriptive statistics of body weight (kg) at different ages

Traita	N	Mean	St Dev
BW00	84	4.20	0.83
BW02	514	5.22	1.33
BW15	406	11.53	2.61
BW25	409	17.31	2.86
BW32	21	22.90	3.41
BW37	385	19.24	2.68
BW43	385	29.07	3.51
BW48	385	28.13	3.31
BW50	384	24.26	3.14
BW56	380	24.80	2.94
BW60	377	27.68	3.11
BW67	374	32.70	3.81
BW74	371	40.19	3.89
BW79	372	40.13	3.90
BW83	372	43.82	4.69
BW90	91	44.00	4.20
BW98	91	42.29	3.91

^aTraits are shown as BWxx where xx is the age in weeks