Table 3 Hazard ratios (HR) for the influence of health behavior variables on tumor survival in HNSCC patients
Variable | HR overall survivala | HR progression free survivala | HR tumorspecific survivala | |||
|---|---|---|---|---|---|---|
(n = 263) | 95 % CI | (n = 254) | 95 % CI | (n = 261) | 95 % CI | |
Dental care scoreb | ||||||
Score 0–2 | 1.00 | Ref. | 1.00 | Ref. | 1.00 | Ref. |
Score 3–6 (poor care) | 1.30 | 0.78–2.15 | 1.48 | 0.89–2.45 | 1.51 | 0.79–2.88 |
Mouthwash used | ||||||
Mouthwash < 2 times/day | 1.00 | Ref. | 1.00 | Ref. | 1.00 | Ref. |
Mouthwash ≥ 2 times/day | 1.32 | 0.76–2.31 | 1.47 | 0.88–2.47 | 2.26 | 1.19–4.32 |
Oral health scorec | ||||||
Oral health 0–5 | 1.00 | Ref. | 1.00 | Ref. | 1.00 | Ref. |
Oral health 6–7 (poor health) | 1.05 | 0.69–1.60 | 1.11 | 0.74–1.67 | 0.85 | 0.47–1.54 |
Smoking log[pack-years + 1] | ||||||
10 pack-years | 2.05 | 1.17–3.61 | 1.89 | 1.11–3.24 | 1.72 | 0.83–3.56 |
20 pack-years | 2.46 | 1.21–4.97 | 2.22 | 1.14–4.34 | 1.97 | 0.79–4.89 |
Smoking freq log[cigarettes + 1] | ||||||
10 cigarettes/day | 2.30 | 1.17–4.52 | 2.04 | 1.07–3.89 | 2.06 | 0.83–5.09 |
20 cigarettes/day | 2.83 | 1.22–6.58 | 2.44 | 1.09–5.46 | 2.47 | 0.80–7.64 |
Drinking (drink-years) log[drinkyears + 1] | ||||||
10 drink-years | 1.59 | 1.14–2.24 | 1.53 | 1.10–2.11 | 1.90 | 1.21–2.99 |
20 drink-years | 1.79 | 1.17–2.74 | 1.70 | 1.13–2.55 | 2.23 | 1.27–3.93 |
Drinking freq log[drinks + 1] | ||||||
2 drinks/day | 1.47 | 1.13–1.90 | 1.52 | 1.18–1.97 | 1.52 | 1.08–2.12 |
5 drinks/day | 1.87 | 1.22–2.87 | 1.99 | 1.31–3.04 | 1.97 | 1.14–3.41 |