| No. | Name of Lifestyle | Third Class | Second Class | First Class | Type | No. of Studies |
|---|---|---|---|---|---|---|
| 1 | Nucleotide excision repair | Nucleotide excision repair(NERC) | Surgery | Clinical characteristics | Risk factor No statistical significance factor | 1 |
| 2 | Nucleotide excision repair Median cut-off | Nucleotide excision repair(NERC) | Surgery | Clinical characteristics | Risk factor | 1 |