Table 4.
Total no. cases | Adjusted OR (95 % CI)a | p-value | |||
---|---|---|---|---|---|
Histology | 0.09 | ||||
SCC | 854 | 1.00 | |||
Others | 211 | 0.72 (0.50–1.05) | |||
Area of residence | 0.77 | ||||
Urban | 691 | 1.00 | |||
Rural | 374 | 0.95 (0.69–1.32) | |||
Tumour stageb by time period and age at diagnosis | |||||
IA | 0–45 years* | 1984–1998** | 119 | 1.00 | |
1999–2008 | 50 | 0.99 (0.49–1.99) | |||
46–65 years | 1984–1998 | 35 | 1.00 | ||
1999–2008 | 11 | 0.97 (0.40–2.37) | |||
>65 years | 1984–1998 | 13 | 1.00 | ||
1999–2008 | 2 | 0.11 (0.04–0.33) | |||
IB–IIA | 0–45 years | 1984–1998 | 172 | 1.00 | |
1999–2008 | 50 | 1.04 (0.57–1.90) | |||
46–65 years | 1984–1998 | 72 | 1.00 | ||
1999–2008 | 31 | 1.02 (0.50–2.08) | |||
>65 years | 1984–1998 | 56 | 1.00 | ||
1999–2008 | 19 | 0.11 (0.04–0.29) | |||
IIB–IVA | 0–45 years | 1984–1998 | 65 | 1.00 | |
1999–2008 | 57 | 0.28 (0.13–0.57) | |||
46–65 years | 1984–1998 | 96 | 1.00 | ||
1999–2008 | 72 | 0.27 (0.14–0.54) | |||
>65 years | 1984–1998 | 104 | 1.00 | ||
1999–2008 | 41 | 0.03 (0.01–0.08) |
OR odds ratio, SCC squamous cell carcinoma/adenosquamous carcinoma
*Interaction between time period and age (p < 0.0001)
**Interaction between time period and tumour stage (p = 0.002)
aOR was adjusted for all variables shown in this table
bPatients with tumour stage IVB were not included in the analysis due to insufficient number