Table 2.
Anagraphic and clinical features of the control group.
| Control Group (n = 24) | ||
|---|---|---|
| Categorical Variables | No. (%) | |
| Gender | Male | 13 (54%) |
| Female | 11 (46%) | |
| Ethnicity | Caucasian | 23 (96%) |
| Asian | 01 (4%) | |
| Cause of referral to hospital | Recurrent URTI | 13 (54%) |
| Recurrent fever | 05 (21%) | |
| Recurrent tonsillitis | 01 (4%) | |
| EBV virus infection | 01 (4%) | |
| Recurrent herpetic infection | 01 (4%) | |
| Reactive lymphadenopathy | 01 (4%) | |
| Recurrent abdominal pain | 01 (4%) | |
| Transient childhood hypogammaglobulinemia | 01 (4%) | |
| Continuous Variables | Mean | |
| Age at enrollment in the study (range 1–24) (y) | 06 | |
Abbreviations: No., number; URTI, upper respiratory tract infection; y, years.