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Table 1 Characteristics of the eligible studies

From: Risk factors for quinolone-resistant Escherichia coli infection: a systematic review and meta-analysis

Study (year)

Study design

Years enrolled

Study region

Case/control, n

Male sex,

case/control, n

Mean age

(SD or range), case/control, years

Drug resistance pattern

Risk of biasa

Outcomes of interest

Pena et al. (1995)

Case- control

1988–1992

Spain

27/54

15/24

N/A

Ciprofloxacin-resistant

3/1/2/6

Age, underlying diseases, acquisition, source of infection, immunosuppressive drugs, prior quinolones, prior other antibiotics

Garau et al. (1999)

Case- control

1992–1997

Spain

70/502

44/264

70.2(13)/ 65.8(18.4)

Ciprofloxacin-resistant

4/2/2/8

Age, sex, underlying disease, acquisition, source of infection, urinary catheter, prior antibiotic use, prior quinolone use, mortality

Cheong et al. (2001)

Case- control

1993–1998

Korea

40/80

28/33

51/54

Norfloxacin or ciprofloxacin-resistant

4/1/2/7

Age, sex, chronic underlying disease, source of bacteremia, urinary catheter, prior antibiotic use acquisition, APACHE II score, duration of antibiotic treatment, death

Sotto et al. (2001)

Case- control

1998–1999

France

17/303

7/67

N/A

Norfloxacin, pefloxacin, ofloxacin, or ciprofloxacin-resistant

4/1/2/7

Age, sex, unit of hospitalization, urinary catheter, nosocomial acquisition, prior hospitalization, prior UTI, prior urinary catheter, prior antibiotic exposure

Eom et al. (2001)

Case- control

1996–2000

Korea

60/80

16/24

58/40

Ciprofloxacin-resistant

4/1/2/7

Age, sex, UTIs, chronic underlying illness, urinary catheter, neurogenic bladder, recurrent UTI, previous admission, operation, prior use of fluoroquinolone, prior use of other antibiotics, duration of previous antibiotics, site of acquisition, hospitals, mortality

Lautenbach et al. (2002)

Case- control

1998–1999

USA

123/70

52/20

75 (32–100)/ 67 (22–99)

Levofloxacin-resistant

4/2/2/8

Age, hospital, admitted from long-term care facility, race, admitted from outside hospital diarrhea, sex, APACHE II score, hospitalized in past 30 d, hospital duration, central venous catheter, urinary catheter, mechanical ventilation, patient location

Huotari et al. (2003)

Case- control

1997–1999

Finland

51/102

21/31

62.6 (20–90)/ 67.1 (21–96)

Norfloxacin or ciprofloxacin-resistant

4/1/1/6

Age, time from admission to isolation in days, sex, prior fluoroquinolone therapy, prior therapy with other antimicrobial agent, urinary tract abnormalities, immunosuppression, surgery, organ transplant

Killgore et al. (2004)

Case- control

2001.01–12

USA

40/80

7/11

61 (59)/ 51 (53)

Ciprofloxacin-resistant

4/1/2/7

Age, sex, urinary tract symptoms, previous ciprofloxacin use, previous use of quinolone, previous use of other antibiotic, urinary tract abnormality, catheter, comorbidity, previous surgery, previous hospitalization, recurrent UTI

Maslow et al. (2005)

Case- control

2002.02–07

USA

25/24

24/23

73 (38–87)/ 65.5 (42–98)

Fluoroquinolone-resistant

4/1/1/6

prior hospitalization, duration of residence in facility, decubitus ulcer, low ambulatory status, fluoroquinolone use, prior metronidazole use

Colodner et al. (2008)

Case- control

2005.07–10

Israel

150/150

16/37

57 (18–92)/ 71 (19–94)

Ciprofloxacin or ofloxacin-resistant

4/1/1/6

Age, sex, prior hospitalization, clinical status (dementia, other neurological disease, diabetes mellitus type 2, cardiovascular disease, etc)

Johnson et al. (2008)

Case- control

1998–2005

USA

41/82

N/A

55.9/55.4

Levofloxacin-resistant

4/2/2/8

Diabetes, congestive heart failure, any catheter use, any levofloxacin use, or any surgical procedure

Lin et al. (2008)

Case- control

1999.09–12

China

61/122

24/35

62.4 (22.1)/ 48.2 (28.2)

Ciprofloxacin-resistant

3/1/2/6

Demographic characteristics, underlying disease, medical devices, antibiotics administration

Lautenbach et al. (2009)

Case- control

2002–2004

USA

89/685

54/363

66 (54–74)/ 61 (49–73) #

Levofloxacin-resistant

4/1/1/6

Age, sex, race, prior hospitalization, comorbidities, prior antimicrobial use

Rooney et al. (2009)

Cohort studyd

2004–2006

UK

119/175

28/44

N/A

Ciprofloxacin-resistant

3/1/2/6

MRSA or infection, antibiotic use, rimethoprim use, fluoroquinolone use, UTI, hospitalization, catheter use

Yagci et al. (2009)

Cohort study

N/A

Turkey

32/104

12/41

51(13)/ 57(16)

Ciprofloxacin, moxifloxacin, or levofloxacin-resistant

2/1/2/5

Age, sex, race, comorbidities, fluoroquinolone use, hospitalization

Jang et al. (2011)

Cohort study

2005–2009

Korea

509/192

N/A

N/A

Levofloxacin-resistant

2/1/2/5

medical history, underlying disease, status of urinary catheterization

van et al. (2011)

Case- control

2004–2009

The Netherlands

51/369

18/119

71 (54–80)/ 66 (44–78) #

Ciprofloxacin-resistant

4/1/2/7

Age, sex, comorbidities, UTI, hospitalisation, residence in nursing home, antimicrobial use, patient environment characteristics

Smithson et al. (2012)

Case- control

2008–2011

Spain

52/101

N/A

66(16.6)/ 58(16.9)

Ciprofloxacin or levofloxacin-resistant

4/1/2/7

Age, HA-UTI, comorbidities, previous antibiotic treatment

Bailey et al. (2013)

Cohort study

2009–2011

USA

39/183

13/28

N/A

Levofloxacin-resistant

2/1/2/5

Sex, race, comorbidities, home use of antibiotics, surgical procedures

Han et al. (2013)

Cohort study

2002–2004

USA

73/322

36/180

63.2(17.6)/ 61.3(15.1)

Levofloxacin-resistant

3/1/2/6

Age, sex, race, surgical procedures, residence in nursing home, comorbidities

Bedoin et al. (2014)

Cohort study

2011–2012

France

60/284

0/0

76.6/70.2

Ofloxacin-resistant

2/2/3/7

Demographic data, administrative data, clinical data, therapeutic data

Kim et al. (2014)

Case- control

2000–2011

Korea

26/56

19/40

58.2 (9.6)/ 57.8 (10.4)

Ciprofloxacin-resistant

4/1/2/7

Age, sex, cause of cirrhosis, Child-Pugh classification, comorbidities, use of antibiotics, hospitalization, mortality

Park et al. (2014)

Cohort study

2012.04–06

Korea

67/162

0/0

71 (59–77)/ 67 (50–76) #

Ciprofloxacin- resistant

3/2/2/7

Age, comorbidities, bed-ridden state, use of antibiotics, APN, UTI, isolation of CIP-resistant E. coli in the urine

Jadoon et al. (2015)

Cohort study

2011–2012

Pakistan

66/100

N/A

N/A

Ciprofloxacin- resistant

3/1/3/7

Recurrent UTI, history of prior use of ciprofloxacin, diabetes mellitus, immuno-suppressive agent use, history of catheterization

Kratochwill et al. (2015)

Cohort study

2011–2014

USA

100/100

19/10

52.6 (21.7)/ 38.0 (18.4)

Ciprofloxacin-resistant

4//1/2/7

Previous antibiotic use, residence in nursing home, chronic indwelling catheter, recent hospitalization, recurrent UTIs, male sex, age

Saade et al. (2016)

Cohort study

2000–2013

USA

428/59041

N/A

64.9 (25–97)/ 65.0 (44–93)

Ciprofloxacin or levofloxacin-resistant

4/2/2/8

Age, diabetes, history of a culture positive for FQ-resistant E. coli, admission, fluoroquinolone use, other antibiotic use

Mulder et al. (2017)

Case- control

2000–2006

The Netherlands

110/970

28/185

79 (52)/ 73 (65)

Ciprofloxacin-resistant

4/1/2/7

Age, sex, BMI, kidney function, diabetes, SES, fluoroquinolone use, timing of last fluoroquinolone prescription, duration of last prescription

  1. a Cohort and case-control studies were assessed by the Newcastle-Ottawa Quality Assessment Scale. The scores are presented as selection/comparability/outcome/total score
  2. # Age, median (IQR), years
  3. Abbreviations: N/A not applicable, AC acute-care, IC intermediate-term-care, LC long-term-care (> 1 month), UTI urinary tract infections, COPD chronic obstructive pulmonary disease, APACHE Acute Physiology, and Chronic Health Evaluation, MRSA ethicillin-resistant Staphylococcus aureus, HA-UTI healthcare-associated urinary tract infection, APN acute pyelonephritis, BMI body mass index, SES socioeconomic status