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Table 3 Unadjusted and adjusted ORs for the association between PIP and its predictors

From: Potentially inappropriate prescribing among older people in the United Kingdom

PIP (ever/never)

Unadjusted odds ratios (95% CIs)

Adjusted odds ratios* and (95% CIs)

Polypharmacy

  

  -Never (ref)

1.0

1.0

  -Ever

19.4 (19.2-19.7)

18.2 (18.0-18.4)

Age (years)

  

  -70–74 (ref)

1.0

1.0

  -75–80

1.0 (1.0- 1.0)

0.9 (0.9-0.9)

  -81–85

0.8 (0.8-0 .8)

0.8 (0.8-0.8)

  - > 85

0.3 (0.3-0.3)

0.4 (0.4-0.4)

Gender

  

  -Male (ref)

1.0

1.0

  -Female

1.0 (1.0-1.0)

0.9 (0.9- 0.9)

  -Missing

 

1.5 (1.5-1.5)

Mobidities (Charlson morbidity index score)

  

  -1 (ref)

1.0

1.0

  -2

2.2 (2.2-2.3)

1.51 (1.5-1.5)

  -3

0.4 (0.4-0.40)

0.9 (0.9-0.9)

  1. *Adjusted for age (70–74, 75–80, 81–85,>85 years), gender, morbidity (charlson morbidity index: 1 representing a lower number of comorbidities and 3 higher) and polypharmacy (ever/never).