14 August 2020 : Database Analysis
The Role of Chemotherapy in Extraskeletal Osteosarcoma: A Propensity Score Analysis of the Surveillance Epidemiology and End Results (SEER) Database
Lin Qi12ABCDEF, Lu Wan123BC, Xiaolei Ren12EF, Wenchao Zhang12E, Chao Tu12ADE*, Zhihong Li12ADGDOI: 10.12659/MSM.925107
Med Sci Monit 2020; 26:e925107
Table 2 Multivariable logistic regression model of characteristics associated with chemotherapy.
| Characteristic | OR (95% CI) | P value | |
|---|---|---|---|
| Age (year) | <60 | Reference | NA |
| ≥60 | 0.57 (0.34–0.96) | 0.033 | |
| Gender | Male | Reference | NA |
| Female | 0.72 (0.42–1.21) | 0.209 | |
| Marital status | Single | Reference | NA |
| Widowed/divorced | 0.51 (0.23–1.16) | 0.110 | |
| Married | 0.63 (0.31–1.28) | 0.201 | |
| Unknown | 1.11 (0.23–5.31) | 0.895 | |
| Primary site | Extremity | Reference | NA |
| Trunk | 0.46 (0.25–0.85) | 0.012 | |
| Visceral | 0.68 (0.32–1.42) | 0.302 | |
| Other | 0.57 (0.26–1.23) | 0.151 | |
| Grade | Grade I/II | Reference | NA |
| Grade III/IV | 2.40 (0.84–6.86) | 0.101 | |
| Unknown | 1.55 (0.51–4.73) | 0.443 | |
| Stage | Localized | Reference | NA |
| Regional | 0.85 (0.48–1.51) | 0.575 | |
| Distant | 2.13 (1.02–4.44) | 0.044 | |
| Unstaged | 2.96 (0.88–9.94) | 0.080 | |
| NA – not applicable; OR – odds ratio. | |||