Table 2.
Exposure/covariates | All patients |
Young group |
Old group |
pa |
---|---|---|---|---|
(n=4258) |
(n=391) |
(n=3867) |
||
Frequency (%) | Frequency (%) | Frequency (%) | ||
Age at cancer presentation/diagnosis in years | ||||
Median (IQR) | 63.0 (55.0–72.0) | 37.0 (30.0–42.0) | 64.0 (57.0–73.0) | <0.0001 |
Gender | ||||
Male | 2933 (68.9) | 214 (54.7) | 2719 (70.3) | <0.0001 |
Female | 1325 (31.1) | 177 (45.3) | 1146 (29.7) | |
Race | ||||
White | 3136 (73.7) | 263 (67.3) | 2873 (74.3) | <0.0001 |
Black | 622 (14.6) | 87 (22.2) | 535 (13.8) | |
Other | 500 (11.7) | 41 (10.5) | 459 (11.9) | |
Marital status | ||||
Married/with partner | 2225 (52.3) | 164 (41.9) | 2061 (53.3) | <0.0001 |
Divorced/separated/widowed | 750 (17.6) | 30 (7.7) | 720 (17.6) | |
Single | 823 (19.3) | 172 (44.0) | 823 (19.3) | |
Unknown | 460 (10.8) | 24 (6.4) | 435 (11.3) | |
Smoking status | ||||
Current | 771 (26.9) | 65 (25.2) | 706 (27.1) | <0.0001 |
Former | 1035 (36.2) | 58 (22.5) | 977 (37.5) | |
Never | 1058 (36.9) | 135 (52.3) | 923 (35.4) | |
Alcohol status | ||||
Current | 1180 (30.7) | 121 (33.7) | 1059 (30.4) | 0.37 |
Former | 347 (9.1) | 28 (7.8) | 319 (9.2) | |
Never | 2313 (60.2) | 210 (58.5) | 2103 (60.4) | |
Insurance status | ||||
Private insurance | 2381 (55.9) | 265 (70.7) | 2116 (56.6) | <0.0001 |
Medicare | 1051 (25.5) | 26 (6.9) | 1025 (27.4) | |
Medicaid | 407 (9.9) | 47 (12.5) | 360 (9.6) | |
Self-pay/uninsured | 276 (6.7) | 37 (9.9) | 239 (6.4) | |
Anatomic subsite | ||||
Oral cavity | 1029 (24.1) | 117 (29.9) | 912 (23.6) | <0.0001 |
Oropharynx | 813 (19.1) | 60 (15.4) | 753 (19.5) | |
Larynx and hypopharynx | 791 (18.6) | 48 (12.3) | 743 (19.2) | |
Nasopharynx, nasal cavity, and sinuses | 285 (6.7) | 51 (13.0) | 234 (6.1) | |
Major salivary | 438 (10.3) | 53 (13.5) | 385 (10.0) | |
HNC of unspecified originb | 902 (21.2) | 62 (15.9) | 840 (21.7) | |
Cancer stage at diagnosis | ||||
Stage I/II | 440 (38.0) | 19 (27.1) | 421 (38.7) | 0.057 |
Stage III/IV | 717 (62.0) | 51 (72.9) | 666 (61.3) | |
Rurality | ||||
Rural counties | 1538 (36.1) | 115 (29.3) | 1423 (36.8) | 0.004 |
Urban counties | 2720 (63.9) | 276 (70.4) | 2444 (63.2) |
p-value based on chi-square and Wilcoxon tests for the two groups (young vs. old), young group: age at diagnosis ≤45 years, old group: age at diagnosis >45 years.
Cancer in multiple sites, other ill-defined parts of head and neck, including unspecified parts of nasal cavity, oral cavity or floor of mouth, or CUP. Missing data for alcohol status=418, smoking status=1394, insurance status=143, cancer stage at diagnosis=3101.