Table 3 Factors associated with imipenem-resistant Acinetobacter baumannii complex (IRABC) in Taiwan

Number

1060

580

 Mean age ± SD^c

65.0 ± 20.2

70.0 ± 18.8

<0.001

 Age 65 and older^c

629 (61.1)

401 (71.9)

<0.001

1.464

1.122-1.912

0.005

Specimen types

 Respiratory tracts

481 (45.4)

341 (58.8)

<0.001

2.597

1.888-3.570

<0.001

 Blood

192 (18.1)

52 (9.0)

<0.001

Reference

 Pus/discharge

160 (15.1)

59 (10.2)

0.005

1.934

1.240-3.018

0.004

 Urine

140 (13.2)

76 (13.1)

>0.99

2.138

1.401-3.263

<0.001

Healthcare settings

 Medical centers

507 (47.8)

228 (39.3)

0.001

0.814

0.631-1.049

0.112

 ICU Settings

328 (30.9)

272 (46.9)

<0.001

1.919

1.482-2.486

<0.001

Geographic regions

 Northern

336 (31.7)

136 (23.4)

<0.001

Reference

 Central

341 (32.2)

286 (49.3)

<0.001

2.43

1.791-3.296

<0.001

 Southern

258 (24.3)

85 (14.7)

<0.001

1.178

0.812-1.710

0.388

 Eastern

125 (11.8)

73 (12.6)

0.635

2.24

1.489-3.370

<0.001

TSAR period^d

2.277

2.054-2.523

<0.001