Table 8.

Subgroup multivariable GEE analyses on the effects of surgical treatment compared with definitive radio-ablation on outcomes in stage I patients (N = 29). Functional EC (primary outcome, 6MWD)

Variable	β (95% CI)	p value
Sex (F/M)	176.4 (134.1, 218.7)	< 0.001
HFrEF (N/Y)	150.2 (92.6, 207.8)	< 0.001
FEV1% predicted	2.97 (1.47, 4.46)	< 0.001
Surgical treatment (Y/N)	− 41.0 (− 111.9, 29.8)	0.27
Time effect (post-/pre-treatment)	− 32.3 (− 67.0, 2.46)	0.07
Surgical treatment × time effect	9.91 (− 56.2, 76.0)	0.77

6MWD, six-minute walk distance; β, regression coefficient; CI, confidence interval; EC, exercise capacity; F, female; FEV₁, forced expiratory volume in 1 s; GEE, generalized estimating equations; M, male