Table 2.
Standardized infection ratio (SIR) and corrected SIR by different variables in Iranian hospitals in 2018.
| Variables | Hospital number | RTIa | UTIb | SSIc | BSId | ||||||||||||||||||
|
|
|
SIR (95% CI) | Corrected SIR (95% CI) | SIR (95% CI) | Corrected SIR (95% CI) | SIR (95% CI) | Corrected SIR (95% CI) | SIR (95% CI) | Corrected SIR (95% CI) | ||||||||||||||
| National | 769 | 0.31 | 0.4 | 0.93 | 0.99 | 0.86 | 0.99 | 0.4 | 1.14 | ||||||||||||||
| Hospital expertise | |||||||||||||||||||||||
|
|
Accident & burn | 6 | 1.05 (0.68-1.41) | 1.3 (0.85-1.74) | 2.41 (1.52-3.3) | 2.65 (1.67-3.62) | 1.14 (0-2.49) | 1.23 (0-2.67) | 1.58 (0.96-2.19) | 3.59 (2.18-4.99) | |||||||||||||
|
|
General | 578 | 0.94 (0.87-1) | 1.16 (1.08-1.24) | 0.98 (0.91-1.05) | 1.07 (0.99-1.15) | 0.88 (0.81-0.96) | 0.95 (0.87-1.03) | 0.34 (0.19-0.48) | 0.77 (0.43-1.11) | |||||||||||||
|
|
Heart | 11 | 0.71 (0.37-1.04) | 0.87 (0.45-1.29) | 0.57 (0.37-0.78) | 0.63 (0.41-0.98) | 1.06 (0.51-1.6) | 1.13 (0.54-1.72) | 0.7 (0.48-0.92) | 1.6 (1.11-2.09) | |||||||||||||
|
|
Pediatrics | 11 | 0.61 (0.42-0.8) | 0.76 (0.71-1.72) | 0.58 (0.38-0.77) | 0.63 (0.42-0.84) | 1.19 (0.62-1.76) | 1.28 (0.66-1.89) | 1.23 (0.91-1.55) | 2.79 (20.6-3.52) | |||||||||||||
|
|
Obstetrics & gynecology | 21 | 0.44 (0-0.89) | 0.55 (0-1.09) | 0.6 (0.3-0.89) | 0.66 (0.33-0.98) | 0.67 (0.31-1.03) | 0.72 (0.33-1.11) | 0.86 (0.57-1.14) | 1.95 (1.31-2.6) | |||||||||||||
|
|
Othere | 34 | 0.0003 (0-0.0009) | 0.0004 (0-0.001)) | 0.63 (0.37-0.89) | 0.69 (0.41-0.98) | 0.39 (0.13-0.65) | 0.42 (0.14-0.7) | 1.49 (0.79-2.18) | 3.39 (1.81-4.97) | |||||||||||||
| Hospital affiliation | |||||||||||||||||||||||
|
|
Government | 556 | 0.02 (0-0.06) | 0.025 (0-0.07) | 0.98 (0.9-1.05) | 1.07 (0.99-1.15) | 0.89 (0.81-0.97) | 0.96 (0.87-1.05) | 0.38 (0.22-0.53) | 0.85 (0.49-1.21) | |||||||||||||
|
|
Semigovernment/other | 78 | 0.79 (0.62-0.96) | 0.98 (0.77-1.19) | 0.8 (0.64-0.96) | 0.88 (0.7-1.05) | 0.76 (0.6-0.93) | 0.82 (0.64-1.004) | 1.05 (0.8-1.31) | 2.39 (1.81-2.98) | |||||||||||||
|
|
For-profit | 135 | 0.88 (0.69-1.07) | 1.09 (0.86-1.33) | 0.67 (0.57-0.77) | 0.73 (0.62-0.84) | 0.73 (0.56-0.89) | 0.78 (0.6-0.95) | 0.89 (0.71-1.07) | 2.03 (1.61-2.45) | |||||||||||||
| Accreditation | |||||||||||||||||||||||
|
|
Excellent | 20 | 0.72 (0.46-0.98) | 0.89 (0.56-1.22) | 1.07 (0.84-1.3) | 1.17 (0.92-1.43) | 0.65 (0.49-0.81) | 0.7 (0.52-0.87) | 1.14 (0.75-1.52) | 2.59 (1.71-3.47) | |||||||||||||
|
|
Grade 1 | 541 | 0.021 (0-0.062) | 0.026 (0-0.077) | 0.96 (0.89-1.03) | 1.06 (0.98-1.13) | 0.87 (0.79-0.96) | 0.94 (0.85-1.02) | 0.36 (0.21-0.52) | 0.83 (0.47-1.18) | |||||||||||||
|
|
Grade 2/3 | 99 | 0.79 (0.62-0.98) | 0.98 (0.77-1.19) | 0.58 (0.43-0.73) | 0.64 (0.47-1.43) | 0.99 (0.8-1.18) | 1.06 (0.85-1.27) | 0.57 (0.39-0.74) | 1.29 (0.89-1.69) | |||||||||||||
| Hospital type | |||||||||||||||||||||||
|
|
Nonteaching | 197 | 0.89 (0.81-0.97) | 1.1 (1.004-1.2) | 0.74 (0.66-0.82) | 0.81 (0.73-0.9) | 0.93 (0.81-1.06) | 1.002 (0.87-1.13) | 0.69 (0.6-0.78) | 1.56 (1.36-1.76) | |||||||||||||
|
|
Teaching | 465 | 0.014 (0-0.043) | 0.02 (0-0.053) | 1.13 (1.03-1.23) | 1.24 (1.13-1.35) | 0.8 (0.72-0.89) | 0.86 (0.78-0.95) | 0.36 (0.19-0.53) | 0.82 (0.45-1.2) | |||||||||||||
aRTI: respiratory tract infection.
bUTI: urinary tract infection.
cSSI: surgical site infection.
dBSI: bloodstream infection.
eOrthopedic, surgery, cancer, psychiatric.