Table 1.
Descriptive characteristics and risk factors of paired patients by location in the case-control study. Data after the propensity score method corroborate the equality between the different locations with their specific controls, except for age in laryngeal tumours (introduced as an adjustment variable in the logistic regression).
| Group Comparison | LARYNX N = 126 |
CONTROL N = 126 |
p-Value | PHARYNX N = 100 |
CONTROL N = 100 |
p-Value | ORAL CAVITY N = 70 |
CONTROL N = 70 |
p-Value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Characteristics | N | % | N | % | N | % | N | % | N | % | N | % | |||
| Age (years) | 63.02 ± 8.566 | 56.30 ± 12.803 | 0.000 | 59.96 ± 8.41 | 59.52 ± 10.044 | 0.742 | 60.92 ± 10.008 | 62.24 ± 8.88 | 0.412 | ||||||
| Sex | |||||||||||||||
| Female | 13 | 10.3 | 13 | 10.3 | 1.000 | 20 | 20.0 | 22 | 22.0 | 0.728 | 16 | 22.9 | 17 | 22.9 | 1.000 |
| Male | 113 | 89.7 | 113 | 89.7 | 80 | 80.0 | 78 | 78.0 | 54 | 77.1 | 54 | 77.1 | |||
| Tobacco smoking | |||||||||||||||
| Never | 7 | 5.5 | 7 | 5.5 | 0.944 | 7 | 7.0 | 8 | 8.0 | 0.943 | 7 | 10.0 | 7 | 10.0 | 1.000 |
| <20 PPY | 20 | 15.9 | 22 | 17.5 | 22 | 22.0 | 23 | 23.0 | 12 | 17.1 | 12 | 17.1 | |||
| >20 PPY | 99 | 78.6 | 97 | 77.0 | 71 | 71.0 | 69 | 69.0 | 51 | 72.9 | 51 | 72.9 | |||
| Missing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| Alcohol drinking | |||||||||||||||
| Never | 53 | 42.1 | 51 | 40.5 | 0.904 | 26 | 26.0 | 27 | 27.0 | 0.985 | 23 | 32.9 | 23 | 32.9 | 1.000 |
| <14 SDU/week | 28 | 22.2 | 31 | 24.6 | 30 | 30.0 | 30 | 30.0 | 19 | 27.1 | 19 | 27.1 | |||
| >14 SDU/week | 45 | 35.7 | 44 | 34.9 | 44 | 44.0 | 43 | 43.0 | 28 | 40.0 | 28 | 40.0 | |||
| Missing | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
p-values related to controls. Statistically significant results in bold. PPY: Tobacco packs per year. SDU: Standard unit of alcohol per week.