The assessment of developmental status using the Ages and Stages questionnaire-3 in nutritional research in north Indian young children

Table 6 Standardized alphas by total ASQ-3 scale and subscales

Age interval	N	Total scale	Communication	Gross motor	Fine motor	Problem solving	Personal social
Age interval	N	Std. α	Std. α	Std. α	Std. α	Std. α	Std. α
12	51	0.77	0.33	0.69	0.62	0.62	0.53
14	43	0.88	0.46	0.82	0.54	0.78	0.57
16	37	0.90	0.67	0.90	0.76	0.69	0.67
18	34	0.75	0.58	0.47	0.62	0.46	0.26
20	42	0.90	0.81	0.73	0.66	0.71	0.76
22	34	0.72	0.70	0.16	0.49	0.17	0.43
24	39	0.82	0.76	0.58	0.29	0.49	-*
27	47	0.84	0.73	0.64	0.59	0.45	0.36
30	37	0.84	0.57	0.35	0.63	0.51	0.70
33	42	0.87	0.81	0.48	0.71	0.63	0.50
36	16	0.91	0.92	0.28	0.30	0.70	-*

α >0.80 - highly, α = 0.60-0.80 – satisfactory, and α = 0.40-0.60 – moderate internally consistent.
* negative average covariance.

ISSN: 1475-2891