Table 3.

Analysis of developmental scores for unmodified cows’ milk and iron supplemented formula milk groups from enrolment to 18 months (46 and 46 infants respectively) and from enrolment to 24 months (44 and 42 infants respectively)

	Enrolment mean	Enrolment-18 months			Enrolment-24 months
		Mean difference	P value (95% CI) for difference between groups*		Mean difference	P value (95% CI) for difference between groups*
General quotient
Unmodified cows’ milk	109.2	−8.3	0.66 (−3.1 to 6.1)		−14. 7	0.036 (0.4 to 10.4)
Iron supplemented formula	111.5	−6.7			−9.3
Locomotor
Unmodified cows’ milk	114.5	−7.2	0.47 (−4.7 to 10.1)		−20.0	0.98 (−4.1 to 12.2)
Iron supplemented formula	115.3	−4.4			−15.9
Personal and social
Unmodified cows’ milk	113.4	−12.9	0.31 (−3.6 to 11.2)		−19.0	0.02 (1.2 to 16.8)
Iron supplemented formula	112.0	−9.1			−10.0
Eye and hand coordination
Unmodified cows’ milk	110.8	−12.1	0.56 (−5.9 to 10.6)		−16.4	0.28 (−4.2 to 14.2)
Iron supplemented formula	108.8	−9.7			−11.3
Hearing and speech
Unmodified cows’ milk	109.4	−6.7	0.49 (−4.6 to 7.5)		−13.5	0.1 (−1.5 to 12.8)
Iron supplemented formula	106.5	−5.3			−7.8
Performance (manipulation and precision)
Unmodified cows’ milk	109.4	−4.8	0.21 (−7.1 to 8.8)		−7.1	0.09 (−1.3 to 15.0)
Iron supplemented formula	105.7	−3.9			−0.2

^*Change in scores between groups.