Table 4

Changes by time in fine and gross motor development.

Bayley-III	Study Group		Control Group		Changes by time in fine and gross motor development within groups				Changes by time in fine and gross motor development between groups
	X/SD		X/SD		Study Group		Control Group		Z	p^b	Effect size (d^b)
	X/SD		X/SD		Z	p^a	Z	p^a	Z	p^b	Effect size (d^b)
*Differences Between Months*
*Fine motor*
6-3	11.37	2.12	10.62	1.99	-3.536	<0.001*	-3.552	<0.001*	-1.555	0.12	0.36
9-6	4.06	1.73	4.75	0.77	-3.360	0.001*	-3.573	<0.001*	-1.989	0.32	0.51
12-9	2.37	1.45	2	1.89	-3.335	0.001*	-3.207	0.001*	-1.081	0.28	0.21
24-12	10.87	1.92	10.37	2.09	-3.526	0.001*	-3.528	<0.001*	-0.534	0.61	0.24
*Gross motor*
6-3	14.06	3.31	12.68	2.77	-3.522	<0.001*	-3.538	<0.001*	-1.223	0.22	0.45
9-6	8.18	2.45	8.93	0.77	-3.553	<0.001*	-3.621	<0.001*	-0.779	0.43	0.41
12-9	4	2.06	3.87	2.65	-3.528	<0.001*	-3.570	<0.001*	-0.693	0.48	0.054
24-12	15.81	2.58	15.31	2.33	-3.524	<0.001*	-3.540	<0.001*	-0.609	0.54	0.203

**Statistically significant at p<0.05. P-value (superscript a) for within-group change calculated using Wilcoxon signedrank test. P-value (superscript b) for between-group difference in baseline scores calculated using Mann Whitney-U tests. X - mean, SD - standard deviation, Effect Size: db >0.80