Table 2 Prevalence of Unintentional and Intentional Non-adherence (N = 24,017)

Ever forget to take medication in past six months

14,987

62.4%

Ever run out of medication in past six months

8,861

36.9%

Careless at times about taking medication in past six months

5,522

23.0%

Reported at least one of the three unintentional non-adherence behaviors in the past six months

16,832

70.1%

Intentional Non-adherence

Items

N

%

Skipped doses to make medication last longer

4,265

17.8%

Took smaller doses to make medication last longer

3,616

15.1%

Altered dose of medication to suit own needs

3,448

14.4%

Stopped taking medication because felt worse

2,071

8.6%

Took less medication because felt better

1,922

8.0%

Skipped medication because felt worse

1,862

7.8%

Skipped medication because felt better

1,766

7.4%

Stopped medication because didn’t think it was helping

1,785

7.4%

Took less medication because felt worse

1,665

6.9%

Stopped taking medication because felt better

1,529

6.4%

Skipped doses because didn’t think medication was helping

1,466

6.1%

Reported at least one of the eleven intentional non-adherence behaviors in the past six months

8,235

34.3%