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Table 2 One-year Incremental Proportion of Days Covered Values for Antihypertensive and Statin Adherence

From: Patterns of antihypertensive and statin adherence prior to dementia: findings from the adult changes in thought study

  

Antihypertensive Users

Statin Users

Year of PDC Measurementa

Measures

Dementia,

Cases (n = 292)

Non-Dementia, Controls (n = 3890)

Dementia,

Cases (n = 148)

Non-Dementia, Controls (n = 1131)

Year − 3 to − 2

Mean ± SD

0.90 ± 0.16

0.93 ± 0.12

0.84 ± 0.18

0.87 ± 0.15

Min, Max

0.08, 1.0

0.01, 1.0

0.10, 1.0

0.05, 1.0

Median

0.96

0.98

0.91

0.92

Year − 2 to − 1

Mean ± SD

0.88 ± 0.20

0.92 ± 0.16

0.83 ± 0.20

0.84 ± 0.22

Min, Max

0,1.0

0, 1.0

0, 1.0

0, 1.0

Median

0.96

0.98

0.89

0.92

Year − 1 to 0

Mean ± SD

0.88 ± 0.20

0.91 ± 0.19

0.81 ± 0.23

0.83 ± 0.24

Min, Max

0, 1.0

0, 1.0

0, 1.0

0, 1.0

Median

0.96

0.98

0.89

0.91

  1. Abbreviations: PDC, proportion of days covered
  2. aTime period between anchor date and index date