Table 2. Final multivariate models for predictors of institutionalization up to 3.4 years and beyond 3.4 years of follow-up.

	Model 1: Predictors up to 3.4 years (n = 1658)		Model 2: Predictors beyond 3.4 years (n = 1428)
Predictors	Hazard Ratio(95% confidence interval)	P value	Hazard Ratio(95% confidence interval)	P value
Age group (80+ vs <80)	1.90 (1.05–3.45)	0.04	2.37 (1.37–4.08)	0.002
Marital status (currently married vs not married)	NA	NA	0.42 (0.24–0.72)	0.002
Social Interactions (high vs low)	0.48 (0.27–0.85)	0.01	0.47 (0.26–0.87)	0.02
ESB immigrant vs Australian born	0.91 (0.35–2.37)	0.85	0.92 (0.32–2.61)	0.87
NESB immigrant vs Australian born	0.31 (0.16–0.60)	0.0005	0.41 (0.22–0.77)	0.005
MCI vs normal	0.72 (0.22–2.36)	0.58	4.39 (2.17–8.87)	<0.001
Dementia vs normal	5.43 (3.00–9.81)	<0.001	6.05 (2.95–12.44)	<0.001
ADL disability (yes vs no)	3.22 (1.80–5.77)	<0.001	2.72 (1.36–5.46)	0.005
IADL disability (yes vs no)	3.01 (1.32–6.86)	0.009	2.71 (1.43–5.13)	0.002
Grip strength (low vs high)	2.19 (1.22–3.93)	0.008	1.95 (1.14–5.13)	0.002
Service use (yes vs no)	2.61 (1.46–4.66)	0.001	NA	NA

ADL = Activities of Daily Living [30]; ESB = English Speaking Background; IADL = Instrumental Activities of Daily Living [31];

MCI = Mild Cognitive Impairment; NESB = Non-English Speaking Background.

NA, not applicable = not a significant predictor during the time period.