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Table 4 Adverse Events (AE) from non-adherence and under-treatment and Adverse Drug Events (ADE) by study group

From: Effect of a care transition intervention by pharmacists: an RCT

 

Enhanced

Minimal

Control

P-values*

Initial Hospitalization

n = 311

n = 312

n = 313

 

Number of possible adverse events

40

43

40

 

Number of AEs due to medication non-adherence†

9

9

6

 

Number of AEs due to medication under-treatment†

1

3

3

 

Number of ADEs†

15

16

15

 

Percent of participants with any AE or ADE†

18 (5.8%)

19 (6.1%)

22 (7.0%)

E + M vs. C: 0.52

During Hospitalization

    

Number of possible adverse events

55

52

57

 

Number of AEs due to medication non-adherence †

1

2

0

 

Number of preventable medication non-adherence AEs‡

1

2

0

 

Number of AEs due to medication under-treatment †

2

0

1

 

Number of preventable medication under-treatment AEs‡

2

0

1

 

Number of ADEs†

18

27

16

 

Number of preventable ADEs‡

0

3

1

 

Percent of participants with any AE or ADE†

19 (6.1%)

19 (6.1%)

14 (4.5%)

E + M vs. C: 0.31

Post-Discharge

n = 306

n = 309

n = 311

 

Number of possible adverse events

183

180

174

 

Number of AEs due to medication non-adherence†

15

8

10

 

Number of preventable medication non-adherence AEs‡

15

7

9

 

Number of AEs due to medication under-treatment†

10

13

6

 

Number of preventable medication under-treatment AEs‡

6

11

5

 

Number of ADEs†

47

49

60

 

Number of preventable ADEs‡

8

7

9

 

Percent of participants with any AE or ADE†

48 (15.7%)

50 (16.2%)

53 (17.0%)

E vs. C: 0.72

    

M vs. C: 0.95

  1. *E = enhanced, M = minimal and C = control groups.
  2. †Medication non-adherence and under-treatment were labeled adverse events (AEs) and counted only if the rating was “Virtually certain” or “Strong level of confidence”. ADEs were counted only if the Naranjo score was 5 or greater.
  3. ‡AEs and ADEs were considered preventable if the rating was “Definitely preventable” or “Probably preventable”.