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Table 2 Comorbidity counts in trial participants and in the community, ordered according to the mean comorbidity counts in the community

From: Representation of people with comorbidity and multimorbidity in clinical trials of novel drug therapies: an individual-level participant data analysis

Indication

Mean comorbidity count

% with comorbidity count > 2

Community (standardised to trials)

Trials

Ratio between mean counts (community:trials)

Community

Trials

Pulmonary fibrosis

3.61 (3.49–3.75)

2.17 (1.03–3.92)

1.87 (0.90–3.49)

0.88 (0.86–0.91)

0.61 (0.28–0.90)

Dementia

3.44 (3.38–3.49)

1.56 (1.10–2.18)

2.27 (1.58–3.11)

0.82 (0.81–0.83)

0.46 (0.30–0.64)

Pulmonary hypertension

3.27 (3.01–3.53)

2.09 (1.93–2.26)

1.57 (1.39–1.75)

0.80 (0.75–0.84)

0.58 (0.53–0.63)

Osteoporosis

3.01 (2.99–3.03)

2.07 (1.43–2.95)

1.50 (1.02–2.10)

0.79 (0.79–0.80)

0.60 (0.42–0.79)

Parkinson’s disease

3.00 (2.90–3.10)

1.36 (0.78–2.18)

2.37 (1.37–3.86)

0.75 (0.73–0.77)

0.39 (0.18–0.64)

Type 2 diabetes mellitus

2.95 (2.94–2.96)

0.79 (0.43–1.32)

4.06 (2.23–6.83)

0.78 (0.78–0.78)

0.27 (0.19–0.36)

Restless legs syndrome

2.85 (2.81–2.89)

1.68 (0.83–2.98)

1.89 (0.96–3.42)

0.74 (0.73–0.75)

0.48 (0.20–0.80)

Pulmonary disease, chronic obstructive

2.76 (2.75–2.78)

1.46 (1.00–2.07)

1.96 (1.33–2.78)

0.75 (0.74–0.75)

0.43 (0.26–0.61)

Thromboembolism

2.52 (2.48–2.56)

1.33 (0.80–2.00)

2.00 (1.24–3.13)

0.68 (0.67–0.70)

0.38 (0.19–0.59)

Systemic lupus erythematosus

2.51 (2.35–2.68)

2.30 (1.08–4.12)

1.22 (0.60–2.32)

0.69 (0.65–0.73)

0.63 (0.29–0.92)

Erectile dysfunction

2.44 (2.43–2.45)

1.08 (0.99–1.17)

2.27 (2.08–2.47)

0.69 (0.69–0.69)

0.32 (0.29–0.36)

Benign prostatic hyperplasia

2.37 (2.34–2.40)

1.11 (0.70–1.69)

2.24 (1.40–3.36)

0.66 (0.66–0.67)

0.30 (0.16–0.50)

Migraine

2.33 (2.31–2.35)

0.98 (0.63–1.42)

2.50 (1.65–3.73)

0.70 (0.69–0.71)

0.26 (0.13–0.42)

Atrial fibrillation

2.22 (2.20–2.23)

1.08 (1.07–1.10)

2.05 (2.01–2.08)

0.63 (0.63–0.64)

0.29 (0.29–0.30)

Osteoarthritis

2.14 (2.13–2.15)

1.79 (1.72–1.86)

1.20 (1.15–1.24)

0.61 (0.61–0.61)

0.54 (0.51–0.56)

Rheumatoid arthritis

2.07 (2.03–2.10)

1.14 (0.87–1.51)

1.84 (1.37–2.39)

0.59 (0.58–0.60)

0.32 (0.22–0.44)

Hypertension

1.91 (1.90–1.91)

0.50 (0.36–0.69)

3.88 (2.76–5.28)

0.54 (0.54–0.54)

0.09 (0.05–0.15)

Psoriatic arthropathy

1.84 (1.78–1.89)

0.67 (0.38–1.09)

2.96 (1.71–4.88)

0.51 (0.50–0.53)

0.15 (0.06–0.30)

Asthma

1.81 (1.81–1.82)

0.58 (0.35–0.92)

3.32 (1.97–5.24)

0.51 (0.50–0.51)

0.12 (0.05–0.23)

Inflammatory bowel disease

1.55 (1.52–1.58)

0.92 (0.68–1.18)

1.73 (1.32–2.28)

0.44 (0.43–0.45)

0.23 (0.15–0.33)

Axial spondyloarthritis

1.42 (1.34–1.50)

0.88 (0.43–1.58)

1.79 (0.90–3.31)

0.40 (0.37–0.43)

0.22 (0.07–0.47)

Psoriasis

1.35 (1.34–1.37)

0.69 (0.48–0.99)

2.02 (1.36–2.80)

0.39 (0.39–0.40)

0.15 (0.08–0.26)