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Table 2 Model baseline population parameters

From: Cost-effectiveness of umeclidinium/vilanterol combination therapy compared to tiotropium monotherapy among symptomatic patients with chronic obstructive pulmonary disease in the UK

Parameter

Values and  % of patients

Standard errora

Distributions used in the PSA

Gender

   

 Female (%)

32.0 %

1.15 %

Beta

 Mean age (years)

63.3

0.1

Normal

BMI

   

 Low (%)

10.4 %

0.84 %

Beta

 Medium (%)

65.1 %

 High (%)

24.5 %

1.02 %

Beta

Any CVD comorbidity (%)

43.5 %

1.13 %

Beta

Without comorbidity (%)

56.5 %

Any other comorbidity (%)

77.3 %

1.07 %

Beta

History of exacerbation, 1 or more (%)

46.2 %

1.21 %

Beta

mMRC score ≥2 (%)

100.0 %

 

Current smokers (%)

49.0 %

1.16 %

Beta

Height (cm)

169.0

0.1

Normal

Fibrinogen (µg/mL)

458.8

102.4

Gamma

Number of exacerbations in prior year

0.50

0.01

Gamma

Proportion of prior exacerbations that are severe

20.0

 

Gamma

Starting SGRQ score

49.1

0.5

Normal

Starting FEV1 %p (%)

47.7 %

0.2 %

Beta

6-min walk distance (m)

378.3

2.9

Normal

  1. BMI body mass index, CVD cardiovascular disease, ECLIPSE Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints, FEV1%p forced expiratory volume in 1 s percent predicted, mMRC modified Medical Research Council dyspnoea scale, PSA probabilistic sensitivity analysis, SE standard error, SGRQ St. George’s Respiratory Questionnaire
  2. a SE Calculated or assumed based on availability of data