TABLE 4.

Differences of proportions of participants that identified the 16 behaviors as “concerning” as a function of age, parenthood, and level of education.

	Age					Have children				Level of education
Behaviors	18–30		31–79			Yes		No			Low		High
	n = 87		n = 96			n = 87		n = 96			n = 82		n = 101
	n	%	n	%	p	n	%	n	%	p	n	%	n	%	p
1. Doesn’t respond to pointing	17	20	20	21	0.413	19	18	18	23	0.797	18	22	19	19	0.701
2. Doesn’t point to desired objects	12	14	21	22	0.078	21	20	12	15	0.211	15	18	18	18	0.533
3. Doesn’t point at interesting objects	19	22	29	30	0.099	30	29	18	23	0.202	23	28	25	25	0.693
4. Doesn’t respond to name	29	33	31	32	0.560	36	34	24	31	0.308	22	27	38	38	0.061
5. Avoids eye contact	39	45	75	78	0.000	73	70	41	53	0.010	55	67	59	59	0.885
6. Play concentrates on specific toy parts	35	40	41	43	0.367	43	41	33	42	0.573	35	43	41	41	0.612
7. Doesn’t handle interesting objects to adults	26	30	51	53	0.001	48	46	29	37	0.124	35	43	42	42	0.560
8. Doesn’t imitate adults	31	36	42	44	0.131	42	40	31	40	0.486	33	40	40	40	0.535
9. Doesn’t speak – Only produce sounds	25	29	37	39	0.081	38	36	24	31	0.222	31	38	31	31	0.844
10. Doesn’t have interest in other children	18	21	34	35	0.014	33	31	19	24	0.147	22	27	30	30	0.334
11. Doesn’t understand instructions	14	16	34	35	0.001	31	30	17	22	0.120	24	29	24	24	0.800
12. Doesn’t understand emotions	31	36	48	50	0.025	48	46	31	40	0.210	34	41	45	45	0.337
13. Produce unusual finger movements	16	18	21	22	0.278	19	18	18	23	0.797	16	20	21	21	0.415
14. Covers ears to common sounds	21	24	27	28	0.271	29	28	19	24	0.310	23	28	25	25	0.693
15. Hits his head with hands or objects	32	37	30	31	0.785	38	36	24	31	0.222	24	29	38	38	0.167
16. Angers abruptly if environment changes	49	56	64	67	0.075	69	66	44	56	0.100	53	65	60	60	0.765

p < 0.05 shown in bold.