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. 2024 Dec 23;21:227. doi: 10.1186/s12954-024-01141-4

Table 3.

Difference-in-difference generalized linear model estimates for total healthcare costs with Puhani recycled predictions, adjusted for COPD exacerbation and DCI (Adjusted Model)

QT Cohort vs. CS Cohort SW Cohort vs. CS Cohort
Estimate SE p-value Estimate SE p-value
Cohort (reference = CS) 0.35 0.02 < 0.001 0.32 0.10 < 0.001
Time (reference = pre-index period) -0.07 0.02 < 0.001 -0.07 0.02 < 0.001
Cohort X Time -0.10 0.03 < 0.001 -0.19 0.11 0.08
Deyo-Charlson Comorbidity Index 0.24 0.003 < 0.001 0.27 0.005 < 0.001
COPD Exacerbation 0.15 0.01 < 0.001 0.16 0.01 < 0.001
Cohort (reference = CS) Estimated differences in changes of costs associated with changes in smoking behavior

-$2,910

(-$4,485, $-1,335)

804 < 0.001

-$5,312

(-$11,067, $442)

2,936 0.08