Characteristics of cases and controls in the Ghana Burkitt lymphoma study
| Characteristic . | Cases (%) . | Controls (%) . | P . |
|---|---|---|---|
| All subjects | 354 (100) | 384 (100) | |
| Sex | .364 | ||
| Female | 145 (41) | 170 (44) | |
| Male | 209 (59) | 214 (56) | |
| Age group, y | <.001 | ||
| 0-2 | 4 (1) | 15 (4) | |
| 3-5 | 64 (18) | 62 (16) | |
| 6-8 | 144 (41) | 100 (26) | |
| 9-11 | 83 (23) | 109 (28) | |
| 12-14 | 59 (17) | 98 (26) | |
| Enrolment year | .001 | ||
| 1965-1974 | 95 (27) | 145 (38) | |
| 1975-1984 | 128 (36) | 98 (25) | |
| 1985-1994 | 131 (37) | 141 (37) | |
| Included in previous SE36 study* | |||
| Yes | 293 (83) | 234 (61) | <.001 |
| No | 61 (17) | 150 (39) | |
| Anti–tetanus toxoidIgG3 | |||
| Negative | 5 (1) | 10 (3) | .252 |
| Positive | 349 (99) | 374 (97) | |
| Response to malaria antigens | .664 | ||
| Negative for all 4 antigens | 16 (5) | 20 (5) | |
| Positive to ≥1 of 4 antigens | 338 (95) | 364 (95) | |
| Characteristic . | Cases (%) . | Controls (%) . | P . |
|---|---|---|---|
| All subjects | 354 (100) | 384 (100) | |
| Sex | .364 | ||
| Female | 145 (41) | 170 (44) | |
| Male | 209 (59) | 214 (56) | |
| Age group, y | <.001 | ||
| 0-2 | 4 (1) | 15 (4) | |
| 3-5 | 64 (18) | 62 (16) | |
| 6-8 | 144 (41) | 100 (26) | |
| 9-11 | 83 (23) | 109 (28) | |
| 12-14 | 59 (17) | 98 (26) | |
| Enrolment year | .001 | ||
| 1965-1974 | 95 (27) | 145 (38) | |
| 1975-1984 | 128 (36) | 98 (25) | |
| 1985-1994 | 131 (37) | 141 (37) | |
| Included in previous SE36 study* | |||
| Yes | 293 (83) | 234 (61) | <.001 |
| No | 61 (17) | 150 (39) | |
| Anti–tetanus toxoidIgG3 | |||
| Negative | 5 (1) | 10 (3) | .252 |
| Positive | 349 (99) | 374 (97) | |
| Response to malaria antigens | .664 | ||
| Negative for all 4 antigens | 16 (5) | 20 (5) | |
| Positive to ≥1 of 4 antigens | 338 (95) | 364 (95) | |
Indicates whether subjects in this study were tested or not in the previous study of association between eBL anti-SE36 seroreactivity conducted, as previously described.17