Table 2.

Hazzard ratio of various models for 30-days re-admission

	Model 1	Model 2	Model 3	Model 4	Mode1 5
Age	1.01 (0.99–1.03)	1.01 (0.98–1.02)	1.00 (0.98–1.03)	1.01 (0.98–1.03)	1.00 (0.98–1.02)
Male gender	1.39 (0.95–2.05)	1.35 (0.92–1.99)	1.38 (0.94–2.04)	1.44 (0.97–2.12)	1.41 (0.95–2.08)
Early comprehensive geriatric screen	0.66* (0.45–0.98)	0.66* (0.45–0.97)	0.67* (0.45–0.98)	0.64* (0.43–0.94)	0.64* (0.43–0.95)
Charlson comorbidity index ≥3		1.85* (1.24–2.75)			1.64* (1.09–2.46)
Barthel index score at admission ≤35			1.6* (1.07–2.37)		1.23 (0.80–1.90)
Length of stay ≥10 days				1.53* (1.03–2.27)	1.42 (0.95–2.15)
No. of admissiona,
1–3 vs 0				1.3 (0.88–1.98)	1.16 (0.76–1.77)
4+ vs 0				3.6* (1.84–6.87)	2.92* (1.49–5.74)

^*p < 0.05

^aWithin 1 year before admission date