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Table 4 Costs of productivity loss per week (CAD)b, comparing the main model with alternative model adding control status as confounder

From: The impact of comorbidities on productivity loss in asthma patients

SCQ score

Main Model

Alternative modela

0

205.12 ± 42.09

215.05 ± 50.51

1

244.42 ± 45.46

253.10 ± 53.85

2

290.07 ± 51.73

296.62 ± 59.65

3

342.81 ± 62.54

346.31 ± 69.40

4

403.47 ± 79.29

402.74 ± 84.45

5

472.90 ± 103.02

466.56 ± 105.91

6

552.02 ± 134.70

538.45 ± 134.69

7

641.82 ± 175.39

619.12 ± 171.69

8

743.35 ± 226.39

709.36 ± 217.94

9

857.74 ± 289.24

809.96 ± 274.69

10

986.20 ± 365.75

921.82 ± 343.39

11

1130.04 ± 458.03

1045.86 ± 425.72

12

1290.72 ± 568.50

1183.12 ± 523.60

13

1469.79 ± 699.91

1334.70 ± 639.22

14

1669.0 ± 855.37

1501.83 ± 775.04*

15

1890.27 ± 1038.37*

1685.85 ± 933.81*

  1. *P value is not significant
  2. aAlternative model: two part model regression analysis on the main model after adding control status
  3. b2010 Canadian dollars
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