Table 7 Independent risk factors for baseline colonization by ESBL-producing Enterobacteriaceae, CR-AB and/or CR-PA and MRSA from the primary and secondary analyses

1. ESBL-producing Enterobacteriaceae

Case (n = 254) vs. non-case (n = 233)

Case (n = 254) vs. no MDR (n = 197)

 Underlying diabetes mellitus

1.45 [1.00–2.10; p = 0.05]

1.49 [1.01–2.20; p = 0.05]

 Previous cephalosporin exposure

2.00 [1.13–3.54; p = 0.02]

2.06 [1.11–3.81; p = 0.02]

2. CR-AB and/or CR-PA

Case (n = 49) vs. non-case (n = 438)

Case (n = 49) vs. no MDR (n = 197)

 Previous hospitalization

2.21 [1.07–4.53; p = 0.03]

2.96 [1.40–6.26; p = 0.004]

 Transfer from another hospital

2.67 [1.19–5.98; p = 0.02]

…

 Transfer from a LTCF

11.51 [1.84–71.83; p = 0.01]

…

 Underlying cerebrovascular disease

2.90 [1.37–6.16; p = 0.005]

2.68 [1.08–6.64; p = 0.03]

 Previous nasogastric tube use

2.38 [1.002–5.67; p = 0.05]

4.13 [1.27–13.47; p = 0.02]

3. MRSA

Case (n = 35) vs. non-case (n = 452)

Case (n = 35) vs. no MDR (n = 197)

 Previous fluoroquinolone exposure

2.76 [1.13–6.74; p = 0.03]

3.85 [1.26–11.80; p = 0.02]

 Previous use of nasogastric tube

6.60 [1.13–6.74; p < 0.001]

12.86 [4.47–36.97; p < 0.001]