Characteristics of cases and controls enrolled in study of <i>Campylobacter</i> infection and Guillain-Barré Syndrome, the Arab Republic of Egypt, April 2001 through September 2003.

aMedian (interquartile range). bPatients were matched to controls for age (±2 years) and hospital for all cases and controls; matching was incomplete when analyzing subgroups (e.g., Cases and controls with diarrhea). cP = .002; Odds Ratio = 1.86 (95% CI: 1.25 to 2.78), univariate unconditional logistic regression. dOwned three or more luxury items (e.g., cell phone, car). eP = .04; Odd Ratio = 0.10 (95% CI: 0.01 to 0.93), univariate unconditional logistic regression.