TABLE 3.
Difference in nonreactivity rates to DTH testing with tetanus or mumps antigen among adolescent subjects by immunization status with the corresponding antigen
| Immunization and cutoff point (mm) | No. (%) reactive in immunization group
|
RRa (95% CI) | |
|---|---|---|---|
| Nonimmunized | Immunizedb | ||
| Tetanusc | |||
| 1 | 44 (46.8) | 10 (34.5) | 1.36 (0.8–2.3) |
| 2 | 44 (46.8) | 10 (34.5) | 1.36 (0.8–2.3) |
| 3 | 48 (51.1) | 13 (44.8) | 1.14 (0.7–1.8) |
| 4 | 51 (54.3) | 16 (55.2) | 0.98 (0.7–1.4) |
| 5 | 54 (57.5) | 17 (58.6) | 0.98 (0.7–1.4) |
| Mumpsd | |||
| 1 | 35 (36.5) | 11 (36.7) | 0.99 (0.6–1.7) |
| 2 | 37 (38.5) | 12 (40.0) | 0.96 (0.6–1.6) |
| 3 | 42 (43.8) | 15 (50.0) | 0.88 (0.6–1.4) |
| 4 | 51 (53.1) | 16 (53.3) | 1.00 (0.7–1.5) |
| 5 | 57 (59.4) | 17 (56.7) | 1.05 (0.7–1.5) |
a
No RR estimate reached statistical significance.
b
Note: subjects with recent immunizations were excluded only if the particular antigen was recently administered or immunization status was unknown. The sample sizes are thus slightly different from those in other tables.
c
Nonimmunized, n = 94; immunized, n = 29.
d
Nonimmunized, n = 96; immunized, n = 30.