showed a trendp = 0.053
Multivariable Cox Proportional Hazards Regression In multivariable Cox proportional hazards regression analysis adjusting for age, sex, and level of obstruction, secretory obstruction (vs structural obstruction) showed a trend toward lower failure risk in the secretory group compared with the structural group (HR, 0.28; 95% CI, 0.077–1.015; p = 0.053) ( Table 3 ; Supplementary Figure S1 ). 4.