Table 5.

Association between period of residence in prefabricated temporary housing and amelioration of psychological distress among the subjects with higher psychological distress (K6 score ≥5) at the baseline (n=168)

	Period of residence in prefabricated temporary housing (years)			P trend
	<3 years	3–4 years	>4 years (still living in prefabricated temporary housing)
Number of subjects	87	58	23
Number of subjects with amelioration*	38	24	3
Crude OR (95% CI)	1.00 (reference)	0.89 (0.45 to 1.72)	0.23 (0.06 to 0.70)	0.033
Age–sex adjusted OR (95% CI)	1.00 (reference)	0.87 (0.44 to 1.70)	0.21 (0.05 to 0.66)	0.028
Multivariate adjusted OR (95% CI)†	1.00 (reference)	0.93 (0.46 to 1.88)	0.26 (0.06 to 0.85)	0.082

*Amelioration was defined as the change from higher (K6 score ≥5) (2011) to lower psychological distress (K6 score <5) (2016).

†Adjustment items were age, sex, K6 score at baseline, subjective economic status (poorest, fair to poorer or missing), social ties (strong ties, weak ties or missing) and self-rated health (good health, bad health or missing).

K6, Kessler 6-Item Psychological Distress Scale.