Table 7. Effect of Pb exposure on Rubella Titersa.
| Parameter | Risk Class IA | Risk Class IB | Risk Class IIA | Risk Class IIB-IV | Kruskal p- value |
||||
|---|---|---|---|---|---|---|---|---|---|
| Median (Min, Max) |
N | Median (Min, Max) |
N | Median (Min, Max) |
N | Median (Min, Max) |
N | ||
| Entire Population |
124.7 (0, 7500) |
51 | 79.3 (0, 500) |
149 | 58.75 (0, 7500) |
78 | 60.75 (0, 465.1) |
36 | 0.36 |
| Pb+ETS | 136.7 (5, 469) |
26 | 53.55 (0, 500) |
98 | 57.15 (0, 7500) |
58 | 35.8 (1, 425) |
26 | 0.03 |
| Pb only | 108.8 (0, 7500) |
23 | 99.1 (0, 500) |
46 | 87.3 (0, 500) |
19 | 173.6 (0, 465.1) |
9 | 0.06 |
a
Time since immunization as covariate.
p < 0.05 Significant difference between risk groups.
0.05 < p < 0.10 Trend in differences between means of risk groups.