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Table 2 Possible predictors for patients nonpersistent for reasons other than disease progression

From: Influence of patient and tumor characteristics on therapy persistence with letrozole in postmenopausal women with advanced breast cancer: results of the prospective observational EvAluate-TM study

Possible Predictors

Persistence

Non-persistence

Mean or N

SD or %

Mean or N

SD or %

Age (in years)

66.4

11.5

66.2

10.9

BMI (kg/m2)

27.6

5.7

27.6

4.8

Number of concomitant medications

2.1

3.2

1.7

2.3

ECOG

 0

56

41.8

13

50.0

 1

62

46.3

10

38.5

 2

11

8.2

3

11.5

 3

4

3.0

0

0.0

 4

1

0.7

0

0.0

Time from diagnosis to therapy (in years)

3.1

4.7

2.9

4.5

Adverse events within the first 30 days

 No

123

91.8

18

69.2

 Yes

11

8.2

8

30.8

Do you sometimes forget to take your medicine?

 No

115

90.5

22

91.7

 Yes

12

9.5

2

8.3

Do you take all your medicine always at the same time?

 No

11

8.7

2

8.3

 Yes

115

91.3

22

91.7

Do you sometimes not take your medicine if you feel good?

 No

115

92.7

23

95.8

 Yes

9

7.3

1

4.2

Do you not take your medicine at all if you feel worse due to illness?

 No

121

96.0

22

91.7

 Yes

5

4.0

2

8.3

On how many days in the past 30 days did you not take/forget to take your medicine?

 0

109

93.2

20

87.0

 1–10

8

6.8

3

13.0

How satisfied were you with the information provided regarding endocrine treatment and its side effects?

 Very satisfied

45

40.5

6

25.0

 Satisfied

46

41.4

11

45.8

 Neither satisfied nor unsatisfied

8

7.2

5

20.8

 Unsatisfied

8

7.2

1

4.2

 Very unsatisfied

2

1.8

1

4.2

 Not applicable

2

1.8

0

0.0