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Table 1 Model inputs: baseline demographics by base case and ITT population, and resource costs

From: Cost-effectiveness analysis of umeclidinium bromide/vilanterol 62.5/25 mcg versus tiotropium/olodaterol 5/5 mcg in symptomatic patients with chronic obstructive pulmonary disease: a Spanish National Healthcare System perspective

Parameters

Base case analysis

ITT scenario analysis

Female, %

19.2 [34]

39.8

Age (years), mean (SE)

68.2 (0.4) [34]

64.4 (0.6)

Smoking status (current smokers), %

23.1 [35]

53.0

Any cardiovascular comorbidity, %

26.3a

26.3b

Any other comorbidity, %

78.4a

78.4

History of exacerbation, ≥1 moderate or severe in the previous 12 months, %

18.2a

18.2

BMI (kg/m2), %

  < 21

7.1 [35]

10

 21–30

60.8 [35]

50

  > 30

32.1 [35]

40

mMRC score ≥ 2, %

100a

100

Number of moderate and severe exacerbations in previous year, mean (SE)

0.2 (0.03)a

0.2 (0.03)

Number of severe exacerbations in previous year as a % of total previous year exacerbations, mean

13.7a

13.7

Baseline FEV1% predicted, mean (SD)

59.6 (5.6)a

59.6 (5.6)

Baseline FEV1 mL, mean (SE)

1563 (28.6)a

1563 (28.6)

Height (cm), mean (SE)

167.6 (0.3) [36]

169.9 (0.6)

Fibrinogen (mcg/dL), mean

456.7c

453.2c

SGRQ score, mean (SE)

42.7 (0.3) [56]

43.1 (1.0)d

6MWT distance (m), mean

346.1c

349.9c

Exacerbation event costs (€)

 Moderate exacerbation

72.76

 Severe exacerbation

4466.09

Annual disease management costs (€/year)

 Without dyspnea symptoms

524.87

 With dyspnea symptoms several days per week

699.98

 With dyspnea symptoms most days per week

925.85

  1. BMI body mass index, FEV1 forced expiratory volume in one second, ITT intent-to-treat; mMRC, modified Medical Research Council, SD standard deviation, SE standard error; SGRQ St. George’s respiratory questionnaire, 6MWT 6-min walk test
  2. aSpanish data not available from publications so sourced from head-to-head study [25]
  3. bcardiovascular comorbidity defined as any cardiac disorder (coronary artery disease, myocardial infarction, arrhythmia, or congestive heart failure) or cerebrovascular accident
  4. cpredicted using GALAXY model
  5. dpredicted using GALAXY model SGRQ-C risk equation and converted to SGRQ