. Author manuscript; available in PMC: 2014 Feb 25.

Published in final edited form as: J Pediatr Gastroenterol Nutr. 2009 Aug;49(2):222–232. doi: 10.1097/MPG.0b013e3181928937

Table 3.

Extremes of Growth Distribution by Study Formula at Entry and 4 and 8 weeks

Proportion of Infants with Growth Z-scores <10^th percentile or >90^th percentile
Measure and Study Week	N	CF		N	SF		Fisher’s Exact p-value
Measure and Study Week	N	<10^th percentile N (percent)	>90^th percentile N (percent)	N	<10^th percentile N (percent)	>90^th percentile N (percent)	Fisher’s Exact p-value
WAZ
0	968	240 (25)	29 (3)	980	254 (26)	37 (4)	0.51
4	906	160 (18)	99 (11)	917	191 (21)	94 (10)	0.22
8	827	70 (8)	92 (11)	856	93 (11)	88 (10)	0.23
LAZ
0	962	267 (28)	47 (5)	970	279 (29)	40 (4)	0.67
4	902	340 (38)	55 (6)	913	346 (38)	60 (7)	0.91
8	827	246 (30)	39 (5)	853	263 (31)	26 (3)	0.20
HCZ
0	961	193 (20)	23 (2)	969	192 (20)	30 (3)	0.65
4	903	212 (23)	65 (7)	912	208 (23)	68 (7)	0.93
8	823	171 (21)	21 (3)	850	190 (22)	29 (3)	0.40

CF=concentrated (26 kcal/oz, 87 kcal/100 ml) formula

SF=standard (20 kcal/oz, 67 kcal/100 ml) formula

WAZ=weight-for-age z-score

LAZ=length-for-age z-score

HCZ=head circumference-for-age z-score