Table 1

Characteristics of the study population by substantiation status and mental health-related contact

			Substantiated allegation, n (col %)						No substantiated allegation, n (col %)
Characteristics	Total, n (col %)		Total		Mental health-related contact		No mental health-related contact		Total		Mental health-related contact		No mental health-related contact
Total	524 534	100	11 560	100	4322	100	7238	100	512 974	100	33 021	100	479 953	100
Gender
Female	268 651	51.2	5472	47.3	2056	47.6	3416	47.2	263 179	51.3	17 681	53.5	245 498	51.2
Male	255 831	48.8	6088	52.7	2266	52.4	3822	52.8	249 743	48.7	15 332	46.4	234 411	48.8
Missing	52	0.0	0	0.0	0	0.0	0	0.0	52	0.0	8	0.0	44	0.0
Aboriginality
Non-aboriginal	492 740	93.9	7771	67.2	2563	59.3	5208	72.0	484 969	94.5	27 642	83.7	457 327	95.3
Aboriginal	31 612	6.0	3779	32.7	1754	40.6	2025	28.0	27 833	5.4	5361	16.2	22 472	4.7
Missing	182	0.0	10	0.1	5	0.1	5	0.1	172	0.0	18	0.1	154	0.0
Socioeconomic status
1 (Most dis-adv)	120 565	23.0	5811	50.3	2410	55.8	3401	47.0	114 754	22.4	11 761	35.6	102 993	21.5
2	120 126	22.9	2749	23.8	920	21.3	1829	25.3	117 377	22.9	7749	23.5	109 628	22.8
3	99 811	19.0	1550	13.4	509	11.8	1041	14.4	98 261	19.2	5535	16.8	92 726	19.3
4	94 009	17.9	923	8.0	308	7.1	615	8.5	93 086	18.1	4386	13.3	88 700	18.5
5 (least dis-adv)	87 330	16.6	445	3.8	146	3.4	299	4.1	86 885	16.9	3404	10.3	83 481	17.4
Missing	2693	0.5	82	0.7	29	0.7	53	0.7	2611	0.5	186	0.6	2425	0.5
Parental marital status at birth
Single	51 697	9.9	4000	34.6	1645	38.1	2355	32.5	47 697	9.3	6119	18.5	41 578	8.7
Married/defacto	470 751	89.7	7436	64.3	2642	61.1	4794	66.2	463 315	90.3	26 797	81.2	436 518	91.0
Missing	2086	0.4	124	1.1	35	0.8	89	1.2	1962	0.4	105	0.3	1857	0.4
Maternal age at birth
<20 years	30 019	5.7	2406	20.8	1007	23.3	1399	19.3	27 613	5.4	3830	11.6	23 783	5.0
20–29 years	252 817	48.2	6638	57.4	2482	57.4	4156	57.4	246 179	48.0	18 201	55.1	227 978	47.5
>29 years	241 642	46.1	2516	21.8	833	19.3	1683	23.3	239 126	46.6	10 981	33.3	228 145	47.5
Missing	56	0.0	0	0.0	0	0.0	0	0.0	56	0.0	9	0.0	47	0.0
Paternal age at birth
<20 years	9522	1.8	687	5.9	245	5.7	442	6.1	8835	1.7	1006	3.0	7829	1.6
20–29 years	175 262	33.4	4649	40.2	1633	37.8	3016	41.7	170 613	33.3	13 109	39.7	157 504	32.8
>29 years	314 549	60.0	3257	28.2	1072	24.8	2185	30.2	311 292	60.7	14 916	45.2	296 376	61.8
Missing	25 201	4.8	2967	25.7	1372	31.7	1595	22.0	22 234	4.3	3990	12.1	18 244	3.8
Maternal mental health contact
No	437 578	83.4	5407	46.8	1823	42.2	3584	49.5	432 171	84.2	22 517	68.2	409 654	85.4
Yes	86 956	16.6	6153	53.2	2499	57.8	3654	50.5	80 803	15.8	10 504	31.8	70 299	14.6
Maternal substance contact
No	483 384	92.2	5804	50.2	1890	43.7	3914	54.1	477 580	93.1	26 602	80.6	450 978	94.0
Yes	41 150	7.8	5756	49.8	2432	56.3	3324	45.9	35 394	6.9	6419	19.4	28 975	6.0
Paternal mental health contact
No	477 845	91.1	8804	76.2	3306	76.5	5498	76.0	469 041	91.4	27 868	84.4	441 173	91.9
Yes	46 689	8.9	2756	23.8	1016	23.5	1740	24.0	43 933	8.6	5153	15.6	38 780	8.1
Paternal substance contact
No	481 103	91.7	8189	70.8	3035	70.2	5154	71.2	472 914	92.2	27 925	84.6	444 989	92.7
Yes	43 431	8.3	3371	29.2	1287	30.0	2084	28.8	40 060	7.8	5096	15.4	34 964	7.3

Percentages for some variables sum to less than 100% because of missing data.