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Table 4 Prevalence and odds ratios for individual mental health conditions (standardised by age, gender and deprivation score). Conditions are ordered by size of odds ratio (largest too smallest)

From: Co-morbidity and polypharmacy in Parkinson’s disease: insights from a large Scottish primary care database

Condition

Parkinson’s N (prevalence %) N = 2640

No Parkinson’s N (prevalence %) N = 507,862

Odds ratio (95% CI) (standardised by age, gender and deprivation)a

Schizophrenia (and related non-organic psychosis) or bipolar disorder

92 (3.5)

5216 (1.0)

3.77 (3.05–4.66)

Dementia

319 (12.2)

10,873 (2.1)

3.31 (2.91–3.77)

Learning Disability

15 (0.6)

1337 (0.3)

3.06 (1.82–5.13)

Depression

738 (28.0)

62,774 (12.4)

3.02 (2.76–3.29)

Anxiety & other neurotic, stress related & somatoform disorders

431 (16.3)

32,991 (6.5)

2.32 (2.08–2.59)

Alcohol misuse

83 (3.1)

18,454 (3.6)

1.01 (0.81–1.27) p = 0.87

Anorexia or bulimia

5 (0.2)

1007 (0.5)

0.91 (0.38–2.21) p = 0.85

  1. aAll differences significant at p < 0.001 except where stated