Table 1. Demographic characteristics for head and cancer patients by treatment modality (n = 1083).
| Variables | With cetuximab(n = 158) | Without cetuximab (n = 925) | P-value |
| n(%) | n(%) | ||
| Age, yr | <0.001 | ||
| Mean±SD | 67±13 | 55±10 | |
| Gender | 0.363 | ||
| Male | 150(95) | 892(96) | |
| Female | 8(5) | 33(4) | |
| Charlson Comorbidity Index Score | 0.237 | ||
| = 0 | 89(56) | 474(51) | |
 1 |
69(44) | 451(49) | |
| Socioeconomic status | 0.007 | ||
High ( NT$20001 or US$626 ) |
25(16) | 239(26) | |
Low ( NT$20000 or US$625 ) |
133(84) | 686(74) | |
| Urbanization level | 0.035 | ||
| Urban/Suburban | 97(61) | 646(70) | |
| Rural | 61(39) | 279(30) | |
| Region of residence | 0.041 | ||
| Northern/Central | 112(71) | 724(78) | |
| Southern/Eastern | 46(29) | 201(22) | |
| Treatment modality | 0.302 | ||
| Surgery+Chemotherapy+Radiotherapy | 76(48) | 486(53) | |
| Chemotherapy/Chemotherapy+Radiotherapy | 82(52) | 439(47) |