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Table 2 Pathological and clinical characteristics

From: Marital status and its effect on lung cancer survival

Variable   All patients Marital status at DX
     Never married   Separated/Divorced   Widowed   Married
  N % N % N % N % N %
All 161,228 100.0 20,528 100.0 21,789 100.0 30,866 100.0 88,045 100.0
Co-morbidity           
None 12,754 7.9 2,978 14.5 3,509 16.1 1,516 4.9 4,751 5.4
1 ~ 2 3,793 2.4 667 3.2 761 3.5 583 1.9 1,782 2.0
3 ~ 4 8,477 5.3 1,216 5.9 1,348 6.2 1,544 5.0 4,369 5.0
>4 136,204 84.5 15,667 76.3 16,171 74.2 27,223 88.2 77,143 87.6
SEER stage           
Localized 26,672 16.5 2,316 11.3 2,572 11.8 5,632 18.2 16,152 18.3
Regional, direct extension ± lymph nodes 19,478 12.1 2,184 10.6 2,153 9.9 3,765 12.2 11,376 12.9
Regional, lymph nodes only 13,820 8.6 1,371 6.7 1,486 6.8 2,697 8.7 8,266 9.4
Distant 64,374 39.9 8,049 39.2 7,415 34.0 12,571 40.7 36,339 41.3
Unknown/Unstaged 36,884 22.9 6,608 32.2 8,163 37.5 6,201 20.1 15,912 18.1
Types of lung cancer           
SCLC 20,073 12.5 2,250 11.0 2,358 10.8 4,012 13.0 11,453 13.0
NSCLC 96,134 59.6 10,493 51.1 10,270 47.1 18,589 60.2 56,782 64.5
Other 45,021 27.9 7,785 37.9 9,161 42.0 8,265 26.8 19,810 22.5
Grade           
Undifferentiated 11,780 7.3 1,264 6.2 1,399 6.4 2,292 7.4 6,825 7.8
Poorly-differentiated 37,134 23.0 4,161 20.3 4,049 18.6 6,745 21.9 22,179 25.2
Moderately-differentiated 18,492 11.5 1,808 8.8 1,897 8.7 3,492 11.3 11,295 12.8
Well-differentiated 5,654 3.5 507 2.5 535 2.5 1,188 3.8 3,424 3.9
Unknown/not stated 88,168 54.7 12,788 62.3 13,909 63.8 17,149 55.6 44,322 50.3
Regional nodes positive           
No 19,699 12.2 1,737 8.5 2,066 9.5 3,358 10.9 12,538 14.2
Yes 11,604 7.2 1,105 5.4 1,271 5.8 1,770 5.7 7,458 8.5
Unknown 129,925 80.6 17,686 86.2 18,452 84.7 25,738 83.4 68,049 77.3
Chemotherapy           
No 93,242 57.8 10,371 50.5 9,716 44.6 22,128 71.7 51,027 58.0
Yes 51,037 31.7 5,855 28.5 5,933 27.2 7,395 24.0 31,854 36.2
Unknown 16,949 10.5 4,302 21.0 6,140 28.2 1,343 4.4 5,164 5.9
Radiation Therapy           
No 46,765 29.0 5,948 29.0 5,054 23.2 12,691 41.1 23,072 26.2
Yes 102,232 63.4 10,955 53.4 11,154 51.2 17,615 57.1 62,508 71.0
Unknown 12,231 7.6 3,625 17.7 5,581 25.6 560 1.8 2,465 2.8
Surgery           
No 114,045 70.7 13,607 66.3 12,571 57.7 24,659 79.9 63,208 71.8
Yes 34,896 21.6 3,144 15.3 3,534 16.2 5,794 18.8 22,424 25.5
Unknown 12,287 7.6 3,777 18.4 5,684 26.1 413 1.3 2,413 2.7
  1. SES = Socioeconomic Status (percent living below poverty line); Lowest (≥20%); Middle-low (≥10% and <20%); Middle-high (≥5% and <10%); Highest (<5%).