Table 3 Risk factors predictive of C. difficile infection.
Risk factorOdds ratio (95% CI)P value
Antibiotics3.35 (2.78–4.03)6.2 × 10−37
Immunosuppression2.47 (2.06–2.96)8.4 × 10−23
Recent hospitalization3.32 (2.72–4.06)1.8 × 10−31
Current hospitalization2.94 (2.40–3.61)8.4 × 10−25
Prior CDI5.84 (4.42–7.72)1.6 × 10−35
Any one risk factor1.16 (0.74–1.83)0.51
Any two risk factors3.89 (2.76–5.48)7.4 × 10−15
Any three risk factors5.00 (3.59–6.96)1.2 × 10−21
Any four risk factors9.28 (6.67–12.91)5.4 × 10−40
All five risk factors24.24 (12.96–45.32)1.8 × 10−23