Table 2 Association between death, recurrence, and development of second-primary cancers with second-hand smoke exposure
From: The effect of second hand smoke in patients with squamous cell carcinoma of the head and neck
Parameter | Second Hand Smoke Exposure | Hazard ratio (95% CI) | p-value | |
|---|---|---|---|---|
YES | NO | |||
Second-primary cancer | 18.5% | 21.9% | 0.81 (0.30–2.18) | 0.795 |
Recurrence-rate | 45.7% | 21.9% | 3 (1.18–7.63) | 0.021 |