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Table 1 Patient characteristics

From: Improving antibiotic prescribing for adults with community acquired pneumonia: Does a computerised decision support system achieve more than academic detailing alone? – a time series analysis

Variable

Baseline

Academic detailing

Computerised decision support

Pvalue#

 

N = 392

N = 215

N = 133

 

Age: median (range)

74

(18–96)

73

(18–98)

79

(18–98)

0.05

Sex Female: n (%)

158

40.0%

100

46.0%

60

45.1%

0.29

Nursing home residents: n (%)

55

14.0%

31

14.0%

18

13.5%

0.97

Suspected aspiration: n (%)

39

9.9%

20

9.3%

7

5.3%

0.25

Antibiotics prior to ED: n (%)

100

25.5%

54

25.1%

18

13.5%

0.01

Known beta lactam allergy n (%)

42

10.7%

23

10.6%

21

15.8%

0.25

   Non-immediate

13

 

6

 

15

  

   Uncertain

21

 

17

 

2

  

   Immediate

8

 

0

 

4

  

PSI class (%)

       

   I

11.9%

 

13.4%

 

12.8%

  

   II

14.5%

 

17.2%

 

14.3%

  

   III

17.3%

 

14.8%

 

11.3%

  

   IV

33.4%

}56.1%

28.8%

}54.4%

31.5%

}61.6%

0.39

   V

22.7%

 

25.6%

 

30.1%

  

CURB severe n (%)

182

46.4%

96

44.6%

55

41.3%

0.65

ICU admission any time n (%)

26

6.6%

12

5.6%

10

7.5%

0.76

Length of stay – days, median (range)

4

(1–76)

4

(1–51)

4

(1–41)

0.93

Death: Total n (%)

37

9.4%

14

6.5%

21

15.7%

0.15*

Death: (excl. died in ED) n (%)

35/390

8.9%

12/213

6.5%

16/128

7.8%

0.23*

Comorbidities: (%)

       

   CCF

20.4

 

15.3

 

18.0

 

0.30

   COAD

23.4

 

15.3

 

26.3

 

0.02

   Neoplasia

13.7

 

14.4

 

16.5

 

0.73

   CRF

11.9

 

13.0

 

12.7

 

0.92

   Dementia

13.2

 

14.4

 

21.0

 

0.09

   Alcohol

9.6

 

7.9

 

5.2

 

0.27

   CVA

18.8

 

17.6

 

12.8

 

0.27

   Diabetes

22.2

 

22.7

 

19.5

 

0.76

   Age >85

19.6

 

12.5

 

27.0

 

<0.01

  1. * Adjusted for age, # p values calculated using chi squared test for categorical variables and analysis of variance for continuous variables
  2. ED: Emergency department, ICU: Intensive care unit, PSI: Pneumonia Severity Index, CURB: modified British Thoracic Society Severity score, CCF: Congestive cardiac failure, COAD: Chronic obstructive airways disease, CRF: Chronic renal failure, CVA: Cerebrovascular disease