Table 3 Multivariable analysis of compliance by logistic regression

Perceived importance of therapy

  Not important

1.0 (Ref)

1.0 (Ref)

1.0 (Ref)

  A little important

1.00

0.13-7.48

3.40

0.17-67.8

4.12

0.17-98.9

0.16

  Moderately important

5.91

1.13-30.9

0.003

5.81

0.94-35.9

0.08

5.17

0.74-36.0

  Very important

12.6

2.63-60.3

9.82

1.75-55.1

8.50

1.32-54.7

  Per-unit increase

2.11

1.21-3.68

0.009

2.18

1.24-3.84

0.007

Race

  White

1.0 (Ref)

1.0 (Ref)

1.0 (Ref)

0.54

  Black

1.72

0.50-5.90

0.39

1.66

0.43-6.35

0.46

1.52

0.40-5.73

Value doctor’s opinion

  Not at all

1.0 (Ref)

1.0 (Ref)

  Partly

13.3

0.88-201.2

0.004

17.9

1.02-315.2

0.007

  Almost entirely

45.7

3.54-590.2

54.8

3.73-805.9

  Per-unit increase

4.80

2.01-11.4

<0.001

4.62

1.91-11.2

0.001

Concern about side effects

  Not concerned

1.0 (Ref)

  Small concerns

0.78

0.17-3.59

0.55

  Moderate concerns

2.29

0.11-2.86

  Big concerns

0.56

0.11-2.87