Table 3. Reliability by area of development for final items in MDAT.

Domain of Development	Reliability	Kappa Score			Percentage Agreement
		Excellent, >0.75	Fair to Good, 0.4–0.75	Poor, <0.4	>95%	85%–95%	<85%
Gross motor (34)	Interobserver immediate	34 (100%)	0	0	34 (100%)	0	0
	Interobserver delayed	34 (100%)	0	0	30 (88%)	4 (12%)	0
	Intra-observer delayed	27 (79%)	7 (21%)	0	12 (35%)	22 (65%)	1(3%)
Fine motor (34)	Interobserver immediate	34 (100%)	0	0	34 (100%)	0	0
	Interobserver delayed	30 (88%)	4 (12%)	0	27 (79%)	7 (21%)	0
	Intra-observer delayed	23 (68%)	11 (32%)	0	7(20.6%)	25 (74%)	2(6%)
Language (34)	Interobserver immediate	32 (94%)	0	2 (6%)	32 (94%)	2 (6%)	0
	Interobserver delayed	26(76%)	8 (24%)	0	6 (18%)	26 (76%)	2(6%)
	Intra-observer delayed	30 (88%)	4 (12%)	0	25 (74%)	8 (24%)	1(3%)
Social (34)	Interobserver immediate	34 (100%)	0	0	25 (74%)	9 (26%)	0
	Interobserver delayed	31 (91%)	3 (9%)	0	28 (82%)	5 (15%)	1(3%)
	Intra-observer delayed	16(47%)	18 (53%)	0	7(21%)	21(62%)	5(15%)
Totals (136)	Interobserver immediate	134 (99%)	0	2 (1%)	125 (92%)	11 (8%)	0
	Interobserver delayed	121 (89%)	15 (11%)	0	91(67%)	42(31%)	3(2%)
	Intra-observer delayed	96 (71%)	38(29%)	0	51(38%)	76 (56%)	9(6%)