Table 1.

Demographics, comorbidities, and prior CDI history among CDI and alternative diagnosis patients

	CDI	Alternative diagnosis	OR (95% CI)	P value (unadjusted)
N	88	29
Age (mean)	64.3	50.3	2.55 (0.48–4.58)	0.0162*,**
Female/male	2.4	2.2	0.81 (0.32–1.982	0.636
Diarrhea at presentation? n (%)	35 (39.7)	10 (34.5)	0.90 (0.38–2.16)	0.815
CDI Episodes n (%):
1–2	11 (12.5)	15 (51.7)	7.43 (2.64–20.95)	0.0002**,†
≥3	77 (87.5)	14 (48.3)
Comorbidities and medications n (%)
DMa	16 (18.2)	2 (6.9)	0.526 (0.139–1.99)	0.3407
IBSb	9 (10.2)	14 (48.3)	7.58 (2.77–20.83)	0.0001**
IBDc	12 (13.6)	1 (3.5)	0.22 (0.026–1.77)	0.1517
Malignancy	12 (13.6)	5 (17.2)	1.22 (0.39–3.85)	0.7361
PPId	3 (3.4)	1 (3.5)	0.97 (0.094–9.90)	0.9762
Immunosuppressives	10 (11.4)	1 (3.5)	0.29 (0.032–2.22)	0.2183

^*For each additional year of age, there is a 2.55% increased likelihood of having an alternative diagnosis,

^**p<0.05,

^†This denotes significance in a comparison of least square means between the two groups “1 to 2” episodes and “3 and above” episodes, which is unadjusted.

^aDiabetes mellitus,

^birritable bowel syndrome,

^cinflammatory bowel disease,

^dproton pump inhibitor