Table 4 Logistic regression analyses of factors associated with multiple drug resistance or extensive drug resistance in Haemophilus influenzae

 Year

0.995 (0.966–1.025)

0.735

1.019 (0.938–1.106)

0.664

 Age

0.997 (0.993–1.002)

0.244

0.994 (0.982–1.006)

0.332

 Gender (Male = 1, Female = 0)

0.786 (0.640–0.966)

0.022

0.769 (0.624–0.946)

0.013

1.128 (0.615–2.071)

0.697

 Respiratory tracts (Yes = 1, No = 0)

1.174 (0.818–1.684)

0.385

0.581 (0.258–1.308)

0.190

 Blood (Yes = 1, No = 0)

0.683 (0.327–1.428)

0.311

4.061 (1.399–11.790)

0.010

4.069 (1.339–12.365)

0.013

 Others (Yes = 1, No = 0)

0.923 (0.614–1.386)

0.699

0.914 (0.281–2.973)

0.881

 β-lactamase (Positive = 1, Negative   = 0)^a

0.985 (0.875–1.109)

0.802

0.936 (0.671–1.304)

0.694

 Outpatient department (Yes = 1, No = 0)

1.141 (0.897–1.451)

0.284

1.543 (0.828–2.876)

0.172

 Emergency room (Yes = 1, No = 0)

0.861 (0.638–1.162)

0.327

0.728 (0.287–1.847)

0.504

 Wards (Yes = 1, No = 0)

0.695 (0.570–0.849)

< 0.001

0.816 (0.648–1.029)

0.086

0.380 (0.198–0.728)

0.004

0.517 (0.245–1.091)

0.083

 Intensive care units (Yes = 1, No = 0)

1.541 (1.240–1.915)

< 0.001

1.410 (1.094–1.818)

0.008

2.165 (1.233–3.802)

0.007

1.695 (0.880–3.265)

0.115

 Hospital-acquired infection (Yes = 1, No = 0)

1.048 (0.789–1.392)

0.747

0.394 (0.122–1.274)

0.120