Table 1. Characteristics of cases and controls enrolled in study of Campylobacter infection and Guillain-Barré Syndrome, the Arab Republic of Egypt, April 2001 through September 2003.
| Population characteristics | All Cases and controls | History of diarrhea | Campylobacter positive | |||
| Cases (n = 133) | Controls (n = 374) | Cases (n = 39) | Controls (n = 83) | Cases (n = 14) | Controls (n = 26) | |
| Age (years)a , b | 4 (2 to 9) | 4 (1 to 9) | 4 (1 to 19) | 3 (1 to 10) | 4 (2.5 to 9) | 1.5 (1.0 to 6.0) |
| Male (%) | 60.2 | 57.0 | 56.4 | 51.8 | 78.7 | 53.9 |
| Own livestock (%) | 51.5 | 35.1c | 39.5 | 32.5 | 42.9 | 50.0 |
| Possessed luxury items (%)d | 28.6 | 23.8 | 28.2 | 33.7 | 7.1 | 42.3e |
| Ain Shams University, Children's | 12.0 | 12.3 | 20.5 | 22.9 | 14.3 | 11.5 |
| Cairo University | 36.8 | 35.8 | 18.0 | 19.3 | 50.0 | 38.5 |
| Alexandria University | 51.1 | 51.9 | 61.5 | 57.8 | 35.7 | 50.0 |
a
Median (interquartile range).
b
Patients 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).
c
P = .002; Odds Ratio = 1.86 (95% CI: 1.25 to 2.78), univariate unconditional logistic regression.
d
Owned three or more luxury items (e.g., cell phone, car).
e
P = .04; Odd Ratio = 0.10 (95% CI: 0.01 to 0.93), univariate unconditional logistic regression.