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Table 1 Changes in MPR for the intervention and control groups pre- and post-EDP

From: Impact of prescription length supply policy on patient medication adherence in Thailand

Measure

Unmatched

Propensity score matched

Type-2 diabetes patients

 

Intervention

Control

Intervention

Control

No. of patients (n)

470

5463

400

400

MPR (mean ± SD)

    

Pre-EDP

0.47 ± 0.27

0.53 ± 0.27

0.46 ± 0.26

0.49 ± 0.24

Post-EDP

0.58 ± 0.30

0.59 ± 0.28

0.60 ± 0.30

0.58 ± 0.28

Difference in mean (Post-Pre)

+ 0.11

+ 0.06

+ 0.14

+ 0.09

P value

< 0.001

< 0.001

< 0.001

< 0.001

Difference in Difference

+ 0.05

+ 0.05

P value

< 0.001

< 0.001

Adherence group (%, MPR ≥ 0.8)

  

Pre-EDP

13.2%

17.8%

11.2%

10.5%

Post-EDP

26.0%

24.4%

28.0%

21.8%

Difference in %

+ 12.8%

+ 6.6%

+ 16.8%

+ 11.3%

P value

< 0.001

< 0.001

< 0.001

< 0.001

Dyslipidemia patients

 

Intervention

Control

Intervention

Control

Total (n)

1099

14,396

934

934

MPR (mean ± SD)

Pre-EDP

0.46 ± 0.30

0.55 ± 0.32

0.44 ± 0.27

0.48 ± 0.28

Post-EDP

0.64 ± 0.32

0.68 ± 0.32

0.66 ± 0.32

0.66 ± 0.32

Difference in mean (Post-Pre)

+ 0.18

+ 0.13

+ 0.22

+ 0.18

P value

< 0.001

< 0.001

< 0.001

< 0.001

Difference in Difference

+ 0.05

+ 0.04

P value

< 0.001

< 0.001

Adherence group (%, MPR ≥ 0.8)

Pre-EDP

17.8%

25.5%

13.9%

15.3%

Post-EDP

36.6%

41.0%

38.3%

38.4%

Difference in %

+ 18.8%

+ 15.5%

+ 24.4%

+ 23.1%

P value

< 0.001

< 0.001

< 0.001

< 0.001

  1. EDP, Extended Dispensing Policy; MPR, medication possession ratio