4715.0 - National Aboriginal and Torres Strait Islander Health Survey, 2018-19 Quality Declaration 
Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 11/12/2019   
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RESPONSE RATES, SAMPLE COUNTS AND ESTIMATES


The 2018–19 National Aboriginal and Torres Strait Islander Health Survey (NATSIHS) sample was designed to provide reliable estimates for the Aboriginal and Torres Strait Islander population for the whole of Australia, at state/territory level and for non-remote and remote areas.

SAMPLE DESIGN

The sample design had an expected number of 11,700 fully responding persons. The final processing file compromised 10,579 fully responding persons, the calculation of which is explained below.

A total of 9,284 private dwellings were selected in the sample. These were identified by screening households in non-community areas or through selections of discrete Indigenous communities. The sample was then reduced to 8,707 households after excluding those unable to be contacted after screening


Response rates of initial selected sample


Households

no.
%

Selected private dwellings
9 284
100.0
Sample loss
Vacant dwelling
189
2.0
All persons out of scope/coverage
29
0.3
Other sample loss(a)
359
3.9
Total sample loss
577
6.2
Selected households after sample loss
8 707
93.8

(a) Includes situations such as selected persons away for enumeration period, no adult in household, no longer any person identifying as being of Aboriginal and/or Torres Strait Islander origin, derelict dwelling, dwelling converted to non–dwelling or holiday home.


Of the 8,707 households in the final sample, 6,388 (73.4%) were fully or adequately responding households. These are households where at least one person selected to complete the survey had either completed it fully or to a point where their data could still be used.


Response rates of households after sample loss


Households

no.
%

Selected households after sample loss
8 707
100.0
Fully/adequately responding households
6 388
73.4
Not adequately responding households
Full/part refusal
916
10.5
Full/part non–contact
1 136
13.0
Language problems
9
0.1
Other
258
3.0
Total not adequately responding
2 319
26.6



From the 6,388 fully or adequately responding households, there were 10,579 people included in the sample.


Persons in sample and response rates, by state/territory


Unit
NSW
Vic.
Qld
SA
WA
Tas.
NT
ACT
Aust.

Households approached(a)
no.
1 140
1 082
1 537
838
1 328
617
1 814
351
8 707
Households in sample
no.
854
808
1 166
603
959
520
1 260
218
6 388
Response rate
%
74.9
74.7
75.9
72.0
72.2
84.3
69.5
62.1
73.4
Total persons in sample
no.
1 540
1 368
1 909
969
1 564
908
1 950
371
10 579

(a) Excluding those unable to be contacted after screening


Fully responding persons in sample, by state/territory and remoteness


NSW
Vic.
Qld
SA
WA
Tas.
NT
ACT
Aust.

no.

Non-remote
1 367
1368
877
640
704
876
400
371
6 603
Remote
173
. .
1 032
329
860
32
1 550
. .
3 976
Total
1 540
1 368
1 909
969
1 564
908
1 950
371
10 579

. . not applicable


Persons in the sample were then weighted to population benchmarks to reflect the size, age structure and geographical distribution of the total population. For more information about the population benchmarks, see Explanatory notes.


Persons in sample and weighted estimates, by sex and age


PERSONS IN SAMPLE
WEIGHTED ESTIMATE


Males
Females
Persons
Males
Females
Persons


Age group (years)
no.
no.
no.
'000
'000
'000

0–4
659
606
1 265
49.2
46.6
95.4
5–9
664
602
1 266
47.5
45.4
92.9
10–14
586
510
1 096
45.5
43.9
89.6
15–19
393
398
791
41.8
40.0
81.7
20–24
275
394
669
37.1
36.4
73.9
25–29
289
440
729
32.8
33.0
65.7
30–34
305
460
765
25.3
27.5
52.3
35–39
224
381
605
20.7
22.9
43.5
40–44
226
336
562
18.8
21.3
40.3
45–49
282
333
615
20.2
23.4
43.6
50–54
234
302
536
17.8
20.4
38.1
55 and over
711
969
1 680
44.9
52.4
97.6
Total
4 848
5 731
10 579
401.5
413.1
814.0


Persons in sample and weighted estimates, by state/territory and age


Unit
NSW
Vic.
Qld
SA
WA
Tas.
NT
ACT
Aust.

Persons in sample
0–17 years
no.
628
541
727
370
617
347
780
146
4 156
18–54 years
no.
651
613
852
444
723
386
904
170
4 743
55 years and over
no.
261
214
330
155
224
175
2665
55
1 680
Total persons in sample
no.
1 540
1 368
1 909
969
1 564
908
1 950
371
10 579

Weighted estimate
0–17 years
'000
109.6
24.6
95.9
17.4
40.3
11.6
25.5
3.0
328.0
18–54 years
'000
127.8
28.4
107.3
20.9
48.2
13.9
38.9
4.0
388.8
55 and over
'000
35.8
7.2
25.5
4.9
11.1
4.3
8.0
0.8
97.6
Total weighted estimate
'000
271.9
60.2
228.9
43.0
99.8
29.8
72.7
7.7
814.0



Persons in sample and weighted estimates by age, sex and remoteness area


PERSONS IN SAMPLE
WEIGHTED ESTIMATE


Males
Females
Persons
Males
Females
Persons


no.
no.
no.
'000
'000
'000

MAJOR CITIES

0–17 years
620
546
1 166
62.9
59.3
122.4
18–54 years
505
733
1 238
73.4
77.7
150.5
55 years and over
194
236
430
15.7
18.8
34.4
Total major cities
1 319
1 515
2 834
151.9
155.8
307.7

INNER REGIONAL

0–17 years
437
399
836
42.2
40.8
83.2
18–54 years
353
495
848
42.8
45.0
87.8
55 years and over
138
168
306
11.4
12.2
23.8
Total inner regional
928
1 062
1 990
96.3
98.0
194.4

OUTER REGIONAL

0–17 years
365
294
659
34.5
33.0
67.9
18–54 years
295
463
758
35.2
39.1
74.7
55 years and over
151
211
362
9.9
11.3
21.8
Total outer regional
811
968
1 779
80.5
83.4
163.9

REMOTE

0–17 years
251
234
485
10.2
9.8
20.1
18–54 years
284
398
682
12.5
13.3
25.8
55 years and over
88
144
232
3.3
4.0
7.3
Total remote
623
776
1 399
26.1
27.1
53.2

VERY REMOTE

0–17 years
513
497
1 010
17.7
16.9
34.5
18–54 years
514
703
1 217
24.5
26.1
50.5
55 years and over
140
210
350
4.8
5.8
10.6
Total very remote
1 167
1 410
2 577
47.0
48.5
95.7

AUSTRALIA

0–17 years
2 186
1 970
4 156
168.0
159.9
328.0
18–54 years
1 951
2 792
4 743
188.2
200.4
388.8
55 years and over
711
969
1 680
44.9
52.4
97.6
Total Australia
4 848
5 731
10 579
401.5
413.1
814.0