B) Radical radiotherapy
Geographical quintile of radiotherapyAdjusted for age and sexAdjusted for age and sex and restricted to Stage III and Stage NA patients
HR95% CIHR95% CI
1Lowest1.001.00
20.980.97 to 1.000.970.95 to 1.00
30.970.95 to 0.990.940.91 to 0.97
40.930.91 to 0.950.920.89 to 0.94
5Highest0.940.92 to 0.950.880.85 to 0.90
χ2(one df)80.797.4
P for trend<0.001<0.001