Table 3. Contingency table and odds ratios describing the association between risk group and potentially avoidable readmission (PAR).

Threshold category	Thresholds	PAR (n = 340)	Non-PAR (n = 5645)	OR (95%-CI)*
Original threshold
Low	<3	9	293	1
Medium	3–10	127	2826	1.46 (0.74–2.91)
High	>10	204	2526	2.63 (1.33–5.18)
Adapted threshold
Low	<12	72	2044	1
Medium	12–25	116	1818	1.81 (1.34–2.45)
High	>25	152	1783	2.42 (1.82–3.23)

Notes

*The low risk group was used as reference for comparison with the medium and high risk groups. OR = Odds ratio; CI = Confidence interval.