Comparison of M-protein level by sex, age at diagnosis, and exposure status
| . | MP < 1.5 g/dL . | MP ≥ 1.5 g/dL . | P* . |
|---|---|---|---|
| Total, no. (%) | 378 (48.4) | 403 (51.6) | |
| Sex, no. (%) | |||
| Male | 195 (50.7) | 190 (49.4) | .21 |
| Female | 183 (46.2) | 110 (27.8) | |
| Age at exposure, no. (%) | |||
| 0-9 y | 83 (51.2) | 79 (48.8) | .004 |
| 10-19 y | 183 (53.2) | 161 (46.8) | |
| 20-29 y | 78 (42.9) | 104 (57.1) | |
| ≥ 30 y | 34 (36.6) | 59 (63.4) | |
| Age at diagnosis, no. (%) | |||
| < 50 y | 7 (35.0) | 13 (65.0) | .93 |
| 50-59 y | 68 (50.8) | 66 (49.2) | |
| 60-69 y | 141 (47.8) | 154 (52.2) | |
| 70-79 y | 125 (50.8) | 121 (49.2) | |
| ≥ 80 y | 37 (43.0) | 49 (57.0) | |
| Exposure distance, no. (%) | |||
| < 1.5 km | 34 (52.3) | 31 (47.7) | .25 |
| 1.5-3.0 km | 79 (40.5) | 116 (59.5) | |
| ≥ 3.0 km | 265 (50.9) | 256 (49.1) | |
| Exposure dose, no. (%) | |||
| > 0.1 Gy | 9 (34.6) | 17 (65.4) | .92 |
| 0.01-0.1 Gy | 10 (29.4) | 24 (70.6) | |
| 0-0.01 Gy | 11 (35.5) | 20 (64.5) |
| . | MP < 1.5 g/dL . | MP ≥ 1.5 g/dL . | P* . |
|---|---|---|---|
| Total, no. (%) | 378 (48.4) | 403 (51.6) | |
| Sex, no. (%) | |||
| Male | 195 (50.7) | 190 (49.4) | .21 |
| Female | 183 (46.2) | 110 (27.8) | |
| Age at exposure, no. (%) | |||
| 0-9 y | 83 (51.2) | 79 (48.8) | .004 |
| 10-19 y | 183 (53.2) | 161 (46.8) | |
| 20-29 y | 78 (42.9) | 104 (57.1) | |
| ≥ 30 y | 34 (36.6) | 59 (63.4) | |
| Age at diagnosis, no. (%) | |||
| < 50 y | 7 (35.0) | 13 (65.0) | .93 |
| 50-59 y | 68 (50.8) | 66 (49.2) | |
| 60-69 y | 141 (47.8) | 154 (52.2) | |
| 70-79 y | 125 (50.8) | 121 (49.2) | |
| ≥ 80 y | 37 (43.0) | 49 (57.0) | |
| Exposure distance, no. (%) | |||
| < 1.5 km | 34 (52.3) | 31 (47.7) | .25 |
| 1.5-3.0 km | 79 (40.5) | 116 (59.5) | |
| ≥ 3.0 km | 265 (50.9) | 256 (49.1) | |
| Exposure dose, no. (%) | |||
| > 0.1 Gy | 9 (34.6) | 17 (65.4) | .92 |
| 0.01-0.1 Gy | 10 (29.4) | 24 (70.6) | |
| 0-0.01 Gy | 11 (35.5) | 20 (64.5) |
Data were used for only patients with MGUS with a heavy-chain class of A, G, and M and with available information on exposure distance and exposure dose. MP indicates M-protein concentration.
P values were calculated using the χ2 test or the Fisher exact test.