Residential green space quantity and quality and symptoms of psychological distress: a 15-year longitudinal study of 3897 women in postpartum

Table 1 Sample counts and percentage reporting serious mental illness, as defined by scores ≥ 13 out of 24 on the Kessler 6 Psychological Distress Scale, across sample characteristics

	N	% K6 ≥ 13	Chi2 (p-value)
Total	20,407	12.4
Green space quantity
< 5%	4204	11.7
6–10%	3292	11.9
11–20%	5671	13.7
21–40%	4987	12.9
> 41%	2253	10.3	22.2 (< 0.001)
Parks good quality
Do not agree	3726	16.0
Agree	9626	12.8
Strongly Agree	6548	9.7
No response	507	13.4	89.2 (< 0.001)
Years since childbirth
0-1y	1658	14.2
2-3y	1623	8.8
4-5y	3362	15.4
6-7y	3440	11.0
8-9y	3312	11.7
10-11y	3436	12.1
12-13y	1810	12.6
14-15y	1766	12.9	60.4 (< 0.001)
Age group
17 to 29	1004	16.4
30 to 34	3198	13.8
35 to 39	6007	12.3
40 to 44	6084	12.0
45 to 63	4114	11.2	26.9 (< 0.001)
Indigenous status
No	20,108	12.3
Yes	290	18.6
No response	9	33.3	14.1 (0.001)
Highest educational qualification
Postgraduate	3357	10.5
Undergraduate	12,172	12.7
Year 11 to 13	3172	11.4
≤ Year 10	1693	16.1
Other	13	23.1	38.3 (< 0.001)
Economic status
employed	14,994	10.4
economically inactive	4979	17.5
unemployed	419	23.6
no response	15	13.3	224.2 (< 0.001)
Area disadvantage
affluent	6786	10.3
average	6745	12.4
deprived	6876	14.5	54.3 (< 0.001)
Geographic remoteness
major cities	13,165	12.9
inner regional	4331	11.1
outer regional or remote	2911	12.2	9.9 (0.007)

ISSN: 1471-244X