Theoretical models of sufficient causes for cervical cancer and environmental risk factors
| Sufficient cause Model 1 | Sufficient cause Model 2 | Sufficient cause Model 3 | Sufficient cause Model 4 |
|---|---|---|---|
| HPV, human papillomavirus. | |||
| HPV DNA in cervical exfoliates | HPV DNA in cervical exfoliates and any other combination of factors | High parity Smoking | None of the four factors |