Characteristics of selected pancreatic cancer cases and controls, case-control study in urban Shanghai.

<p>^aContinuous variables were expressed as median (interquartile) and categorical variables were expressed as frequency(percentage among cases or controls).</p><p>^b<i>P</i>-value were calculated from student’s t test for continuous variables and χ²-test for categorical variables.</p><p>^c<i>P</i>-value were calculated from Fisher’s exact test.</p><p>^d<i>P</i>-value were calculated from student’s t test for log₁₀ transformed standardized PGE-M.</p><p>Characteristics of selected pancreatic cancer cases and controls, case-control study in urban Shanghai.