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Table 2 Prevalence and odds ratio for number and type of comorbidities (standardised by age, gender and deprivation score)

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

 

Parkinson’s N (prevalence %) N = 2640 (0.5%)

No Parkinson’s N (prevalence %) N = 507,862 (99.5%)

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

Total number of morbiditiesa

 None

195 (7.4)

116,358 (22.9)

0.43 (0.38–0.49)

 One

376 (14.3)

113,634 (22.4)

0.81 (0.73–0.89)

 Two

487 (18.5)

94,062 (18.5)

0.99 (0.90–1.09)

 Three

430 (16.3)

69,525 (13.7)

1.01 (0.91–1.12)

 Four

355 (12.7)

47,109 (9.3)

1.05 (0.94–1.19)

 Five

291 (11.0)

29,601 (5.8)

1.38 (1.22–1.56)

 Six

208 (7.8)

17,800 (3.5)

1.56 (1.35–1.81)

 Seven or more

318 (12.0)

19,773 (3.9)

2.08 (1.84–2.35)

Total number of physical conditionsa

 None

311 (11.8)

129,846 (25.6)

0.65 (0.58–0.74)

 One

509 (19.3)

123,984 (24.4)

0.90 (0.82–1.00)

 Two

558 (21.1)

99,187 (19.5)

1.03 (0.94–1.13)

 Three

444 (16.8)

67,710 (13.3)

1.02 (0.92–1.14)

 Four

327 (12.4)

41,539 (8.1)

1.10 (0.98–1.23)

 Five

233 (8.8)

23,414 (4.6)

1.30 (1.13–1.47)

 Six

121 (4.5)

12,078 (2.4)

1.19 (1.01–1.37)

 Seven or more

137 (5.2)

10,104 (2.0)

1.52 (1.27–1.86)

Total number of mental health conditions

 None

1477 (56.0)

406,379 (80.0)

0.33 (0.30–0.36)

 One

718 (27.2)

74,234 (14.6)

2.09 (1.92–2.27)

 Two

376 (14.2)

23,583 (4.6)

3.08 (2.75–3.45)

 Three or more

69 (2.6)

3666 (0.7)

3.14 (2.46–4.00)

  1. aExcluding PD. Includes all other physical + mental conditions
  2. bAll differences significant at p < 0.001