Table 3

Analysis of survival of lung cancer patients in relation to the geographically based propensity to use surgical resection

A) Surgical resection
Geographical quintile of surgical resectionAdjusted for age and sexAdjusted for age and sex and restricted to stage I and II patients
HR95 % CIHR95 % CI
20.960.94 to 0.970.910.85 to 0.96
30.920.91 to 0.940.890.84 to 0.94
40.900.88 to 0.910.820.77 to 0.86
5Highest0.840.83 to 0.860.800.75 to 0.84
χ2(one df)456.774.2
P for trend<0.001<0.001