Table 4.
Descriptive Statistics by Treatment Facility Type.
| Covariate | Facility Type | p Value | ||
|---|---|---|---|---|
| Community, n=20,343 | Comprehensive, n=121,418 | Academic/research n=73,884, | ||
| Clinical variables | ||||
| Patient age, y, n (%) | ||||
| <=60 | 5,656 (27.80) | 31,967 (26.33) | 22,662 (30.67) | <0.001 |
| 61-65 | 3,221 (15.83) | 19,177 (15.79) | 12,043 (16.30) | |
| 66-70 | 3,832 (18.84) | 23,417 (19.29) | 13,355 (18.08) | |
| 71-75 | 3,620 (17.79) | 21,563 (17.76) | 12,233 (16.56) | |
| 76-80 | 2,610 (12.83) | 16,589 (13.66) | 8,790 (11.9) | |
| >80 | 1,404 (6.90) | 8,705 (7.17) | 4,801 (6.50) | |
| Mean (SD) | 66.23 (10.42) | 66.58 (10.39) | 65.39 (10.92) | <0.001 |
| Race: White, n (%) | <0.001 | |||
| No | 2,278 (11.26) | 10,615 (8.80) | 10,528 (14.45) | |
| Yes | 17,952 (88.74) | 109,954 (91.20) | 62,342 (85.55) | |
| Sex, n (%) | <0.001 | |||
| Male | 10,363 (50.94) | 60,037 (49.45) | 35,290 (47.76) | |
| Female | 9,980 (49.06) | 61,381 (50.55) | 38,594 (52.24) | |
| Charlson/Deyo Score, n (%) | <0.001 | |||
| 0 | 10,562 (51.92) | 61,731 (50.84) | 42,046 (56.91) | |
| 1 | 7,047 (34.64) | 43,653 (35.95) | 23,617 (31.96) | |
| 2+ | 2,734 (13.44) | 16,034 (13.21) | 8,221 (11.13) | |
| NCDB analytic stage group, n (%) | <0.001 | |||
| Stage 0-1 | 11,750 (60.47) | 72,795 (63.61) | 42,821 (61.87) | |
| Stage II | 3,657 (18.82) | 20,174 (17.63) | 11,848 (17.12) | |
| Stage III | 3,050 (15.70) | 16,785 (14.67) | 11,255 (16.26) | |
| Stage IV | 975 (5.02) | 4,678 (4.09) | 3,285 (4.75) | |
| Preoperative radiation, n (%) | <0.001 | |||
| No | 19,208 (96.21) | 115,156 (96.06) | 69,592 (95.23) | |
| Yes | 756 (3.79) | 4,722 (3.94) | 3,489 (4.77) | |
| Surgical procedure, n (%) | <0.001 | |||
| Wedge (< 1 lobe) | 3,488 (17.15) | 18,254 (15.03) | 11,115 (15.04) | |
| Segmentectomy | 473 (2.33) | 3,138 (2.58) | 2,307 (3.12) | |
| Lobectomy | 14,912 (73.30) | 92,147 (75.89) | 55,346 (74.91) | |
| Pneumonectomy | 1,470 (7.23) | 7,879 (6.49) | 5,116 (6.92) | |
| Positive surgical margins, n (%) | <0.001 | |||
| No | 17,765 (91.19) | 110,449 (93.10) | 67,944 (94.05) | |
| Yes | 1,716 (8.81) | 8,190 (6.90) | 4,298 (5.95) | |
| Size of tumor, cm, mean (SD) | 3.41 (3.01) | 3.31 (3.00) | 3.37 (3.81) | <0.001 |
| Histology, n (%) | <0.001 | |||
| Large cell cancer | 791 (3.89) | 4,919 (4.05) | 2,835 (3.84) | |
| Other histology | 961 (4.72) | 7,671 (6.32) | 5,728 (7.75) | |
| Unknown histology | 1,556 (7.65) | 7,077 (5.83) | 3,551 (4.81) | |
| Squamous cell cancer | 6,404 (31.48) | 35,038 (28.86) | 19,619 (26.55) | |
| Adenocarcinomas | 10,070 (49.50) | 63,392 (52.21) | 40,282 (54.52) | |
| Adenosquamous cancer | 561 (2.76) | 3,321 (2.74) | 1,869 (2.53) | |
| Non-clinical variables | ||||
| Insurance coverage, n (%) | <0.001 | |||
| Not Insured | 450 (2.26) | 2,174 (1.81) | 1,712 (2.37) | |
| Private insurance | 6,378 (32.02) | 42,081 (35.08) | 27,749 (38.38) | |
| Government insurance | 13,088 (65.72) | 75,713 (63.11) | 42,838 (59.25) | |
| Median local Income, n (%) | <0.001 | |||
| < $30,000 | 3,058 (15.94) | 15,777 (13.75) | 9,826 (14.06) | |
| $30,000 - $34,999 | 4,615 (24.05) | 22,860 (19.92) | 12,100 (17.32) | |
| $35,000 - $45,999 | 5,930 (30.91) | 34,418 (30.00) | 18,222 (26.08) | |
| > $46,000 | 5,584 (29.10) | 41,677 (36.33) | 29,728 (42.54) | |
| Local education level, n (%) | <0.001 | |||
| ≥ 29% Not high school graduate | 3,654 (19.05) | 19,201 (16.74) | 11,723 (16.78) | |
| 20-28.9% Not high school graduate | 5,461 (28.46) | 28,688 (25.01) | 16,407 (23.48) | |
| 14-19.9% Not high school graduate | 5,308 (27.67) | 28,961 (25.24) | 16,429 (23.51) | |
| < 14% Not high school graduate | 4,762 (24.82) | 37,874 (33.01) | 25,309 (36.22) | |
| Area of residence, n (%) | <0.001 | |||
| Metropolitan | 13,727 (72.61) | 90,598 (79.17) | 57,621 (83.60) | |
| Urban | 4,653 (24.61) | 20,632 (18.03) | 10,281 (14.92) | |
| Rural | 525 (2.78) | 3,204 (2.80) | 1,024 (1.49) | |
p Value is calculated by ANOVA for numerical covariates and chi-square test for categorical covariates.
NCDB, National Cancer Data Base.