Table 3. Frequency of Age of Achievement of Gross Motor Milestones.

Characteristics	Classes	N (Frequency)	% (Percentage)
Age of sitting without support (months)
	3.5 – 4	12	3.3
	4 – 4.5	32	8.9
	4.5 – 5	58	16.1
	5.5 – 6	2	0.6
	6– 6.5	67	18.6
	> 6.5	64	17.8
Age of standing with assistance (months) :
	< 5	7	1.9
	5 - 6	16	4.4
	6 – 7	40	11.1
	7 - 8	86	23.9
	8 – 9	112	31.1
	> 9	99	27.5
Age of hands and knee crawling (months) :
	< 6	39	10.8
	6 – 7	84	23.3
	7 – 8	105	29.2
	8 – 9	68	18.9
	9 – 10	43	11.9
	10 – 11	11	3.1
	> 11	10	2.8
Age of walking with assistance (months) :
	< 9	56	15.6
	9 – 10	87	24.2
	10 – 11	87	24.2
	11 – 12	71	19.7
	12 – 13	36	10.0
	> 13	21	5.8
Age of standing alone (months) :
	<9	20	5.6
	9 – 10	80	22.2
	10 – 11	67	18.6
	11 – 12	91	25.3
	12 – 13	61	16.9
	> 13	41	11.4
Age of walking alone (months) :
	< 10	23	6.4
	10 – 11	39	10.8
	11 – 12	78	21.7
	12 – 13	77	21.4
	13 – 14	74	20.6
	>14	69	19.2