Table 3.
Variable | SBRT (N=56) |
Surgery (N=56) |
p-value[1] |
---|---|---|---|
Age, years (mean ± SD) | 70.7 ± 10.6 | 70.0 ± 8.1 | 0.6496 |
Age>75 years (%) | 20 (35.7) | 16 (28.6) | 0.4183 |
Male (%) | 29 (51.8) | 32 (57.1) | 0.5692 |
Race[2] | 0.3207 | ||
White | 49 (89.1) | 53 (94.6) | |
Black | 6 (10.9) | 3 (5.4) | |
Weight (lb) [3] | 175.6 ± 54.5 | 164.3 ± 44.1 | 0.3355 |
T2 (%) | 16 (28.6) | 24 (42.9) | 0.1147 |
CM Score (%) | 0.5702 | ||
2 – 3 | 31 (55.4) | 28 (50.0) | |
Smoking[2] | 0.2060 | ||
Yes | 51 (92.7) | 55 (98.2) | |
No | 4 (7.3) | 1 (1.8) | |
Hypertension[2] | 0.6989 | ||
Yes | 33 (62.3) | 6 (75.0) | |
No | 20 (37.7) | 2 (25.0) | |
Size of Tumor | 2.5 ± 1.1 | 3.0 ± 1.6 | 0.3095 |
Location of Tumor | 0.3408 | ||
Peripheral | 49 (87.5) | 52 (92.9) | |
Central | 7 (12.5) | 4 (7.1) | |
FEV1 (mean ± SD) [3] | 1.6 ± 0.7 | 1.6 ± 0.6 | 0.6156 |
FEV 1(%) (mean ± SD) | 64 ± 24 | 62 ± 18 | 0.8522 |
DLCO (mean ± SD) [3] | 11.6 ± 5.3 | 14.3 ± 4.8 | 0.0020 |
DLCO (%) (mean ± SD) [3] | 55 ± 20 | 73 ± 27 | 0.0001 |
Surgery Procedure Type (%) | |||
Bilobectomy | NA | 1 (1.8) | |
Lobectomy | 44 (78.6) | ||
Pneumonectomy | 0 | ||
Segmentectomy | 6 (10.7) | ||
Wedge | 5 (8.9) |
Age, comobidity score, FEV 1 (%), tumor location, and tumor size were used for propensity score estimation. c-statistics is 0.824. The matched pair is found using a caliper technique with a standard deviation defined as 0.075 of the estimated propensity score for both groups.
Abbreviations: SD, standard deviation; NA, not applicable.
Chi-square or Fisher Exact test for categorical variable; Kruskal-Wallis Test for continuous variable.
The denominator for the percentages is the sum of patients across all categories in the SBRT or Surgery group, respectively, excluding missing values.
Missing values;