| No. (%) | |||
---|---|---|---|---|
Characteristics | Controls (n = 119) | Cases (n = 117) | ||
Female | 68 | 57.1 | 67 | 57.3 |
Age, years | Â | Â | Â | Â |
 18-29 | 29 | 24.4 | 24 | 20.5 |
 30-39 | 15 | 12.6 | 16 | 13.7 |
 40-49 | 17 | 14.3 | 22 | 18.8 |
 50-59 | 40 | 33.6 | 37 | 31.6 |
 60-65 | 18 | 15.1 | 18 | 15.4 |
Non-white race | 61 | 51.3 | 63 | 53.9 |
Less than high school or General Educational Development diploma | 13 | 10.9 | 24 | 20.5 |
Hospitalized within the past year | 70 | 58.8 | 71 | 60.7 |
First-listed diagnosis for the current hospitalization | Â | Â | Â | Â |
 Injury and poisoninga | 9 | 7.6 | 6 | 5.1 |
 Factors influencing health status and contact with health professionalsb | 10 | 8.4 | 2 | 1.7 |
 Symptoms, signs, and ill-defined conditionsc | 15 | 12.6 | 20 | 17.1 |
Live in a block group with any permitted swine | 47 | 39.5 | 58 | 49.6 |
Live on a farm with animals | 4 | 3.4 | 5 | 4.3 |