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. 2021 Oct 13;8:649531. doi: 10.3389/fsurg.2021.649531

Table 2.

Demographic and clinical characteristics of the study cohort.

Characteristic Brain surgery No brain surgery
(n = 276) (n = 500)
Age (year)
≤ 75 267 (96.74%) 444 (88.8%)
>75 9 (3.26%) 56 (11.2%)
Sex
Male 144 (52.17%) 250 (50%)
Female 132 (47.83%) 250 (50%)
Race
White 237 (85.87%) 425 (85%)
Black 30 (10.87%) 50 (10%)
Other 9 (3.26%) 25 (5%)
Income (USD)
< $38,000 42 (15.22%) 103 (20.6%)
$38,000–$62,999 147 (53.26%) 257 (51.4%)
≥$63,000 84 (30.43%) 136 (27.2%)
Unknown 3 (1.09%) 4 (0.8%)
Insurance type
None 15 (5.43%) 21 (4.2%)
Private 129 (46.74%) 195 (39%)
Public 130 (47.1%) 278 (55.6%)
Unknown 2 (0.73%) 6 (1.2%)
Facility volume (cases/year)
≤ 45 151 (54.7%) 263 (52.6)
>45 125 (45.3%) 237 (47.4%)
Charlson-Deyo score
0 184 (66.66%) 311 (62.2%)
1 72 (26.09%) 119 (23.8%)
2 20 (7.25%) 70 (14%)
Chemotherapy
Yes 189 (68.48%) 263 (52.60%)
No 87 (31.52%) 237 (47.40%)
Type of surgical resection
Sublobar resection 43 (15.58%) 174 (34.8%)
Lobectomy or larger resection 214 (77.54%) 290 (58%)
Unknown 19 (6.88%) 36 (7.2%)
Pathologic T stage
T1 79 (28.62%) 116 (23.2%)
T2 112 (40.58%) 173 (34.6%)
T3 37 (13.41%) 75 (15%)
T4 12 (4.35%) 24 (4.8%)
Unknown 36 (13.04%) 112 (22.4%)
Pathologic N stage
N0 154 (55.8%) 189 (37.8%)
N1 40 (14.49%) 68 (13.6%)
N2 31 (11.23%) 72 (14.4%)
N3 0 (0%) 5 (1%)
Unknown 51 (18.48%) 166 (33.2%)