IgG assessment in patients with MM
| . | n = 3405∗ . |
|---|---|
| ≥1 IgG test†,‡ , n (%) | 3231 (94.9) |
| Number of IgG tests per patient during the follow-up period | |
| Mean ± SD | 29.5 ± 31.1 |
| Median (IQR) | 18.0 (7.0-40.0) |
| n (%) | |
| 1 | 152 (4.7) |
| 2 | 137 (4.2) |
| 3 | 151 (4.7) |
| 4 | 108 (3.3) |
| 5 | 110 (3.4) |
| 6 | 94 (2.9) |
| 7 | 94 (2.9) |
| ≥8 | 2385 (73.8) |
| Number of IgG testing per patient per year | |
| Mean ± SD | 6.2 ± 9.4 |
| Median (IQR) | 3.5 (1.6-9.1) |
| Number of patients with IgG testing after the date of MM diagnosis, n (%) | 2716 (84.1) |
| Time from IgG testing to end of follow-up, y | |
| Mean ± SD | 6.4 ± 3.9 |
| Median (IQR) | 6.1 (3.5-9.1) |
| Average IgG test result, mg/dL,§ n (%) | |
| <200 | 35 (1.1) |
| ≥200 to <400 | 339 (10.9) |
| ≥400 to <500 | 310 (10.0) |
| ≥500 to <600 | 389 (12.6) |
| ≥600 | 2026 (65.4) |
| Proportion of patients with hypogammaglobulinemia, n (%) | |
| Any IgG test level <500 mg/dL | 2075 (67.0) |
| First IgG test level <500 mg/dL | 957 (30.9) |
| Lowest IgG test result, mg/dL,§ n (%) | |
| <200 | 618 (19.9) |
| ≥200 to <400 | 1091 (35.2) |
| ≥400 to <500 | 366 (11.8) |
| ≥500 to <600 | 231 (7.5) |
| ≥600 | 793 (25.6) |
| . | n = 3405∗ . |
|---|---|
| ≥1 IgG test†,‡ , n (%) | 3231 (94.9) |
| Number of IgG tests per patient during the follow-up period | |
| Mean ± SD | 29.5 ± 31.1 |
| Median (IQR) | 18.0 (7.0-40.0) |
| n (%) | |
| 1 | 152 (4.7) |
| 2 | 137 (4.2) |
| 3 | 151 (4.7) |
| 4 | 108 (3.3) |
| 5 | 110 (3.4) |
| 6 | 94 (2.9) |
| 7 | 94 (2.9) |
| ≥8 | 2385 (73.8) |
| Number of IgG testing per patient per year | |
| Mean ± SD | 6.2 ± 9.4 |
| Median (IQR) | 3.5 (1.6-9.1) |
| Number of patients with IgG testing after the date of MM diagnosis, n (%) | 2716 (84.1) |
| Time from IgG testing to end of follow-up, y | |
| Mean ± SD | 6.4 ± 3.9 |
| Median (IQR) | 6.1 (3.5-9.1) |
| Average IgG test result, mg/dL,§ n (%) | |
| <200 | 35 (1.1) |
| ≥200 to <400 | 339 (10.9) |
| ≥400 to <500 | 310 (10.0) |
| ≥500 to <600 | 389 (12.6) |
| ≥600 | 2026 (65.4) |
| Proportion of patients with hypogammaglobulinemia, n (%) | |
| Any IgG test level <500 mg/dL | 2075 (67.0) |
| First IgG test level <500 mg/dL | 957 (30.9) |
| Lowest IgG test result, mg/dL,§ n (%) | |
| <200 | 618 (19.9) |
| ≥200 to <400 | 1091 (35.2) |
| ≥400 to <500 | 366 (11.8) |
| ≥500 to <600 | 231 (7.5) |
| ≥600 | 793 (25.6) |
Of the 6062 patients with MM, 3405 patients had accessible SPEP test results (as documented in pathology reports, commentary sections of laboratory reports, or discharge summaries).
IgG tests were evaluated based on the available SPEP reports.
All IgG tests identified from the unstructured data were included.
For patients with multiple IgG tests, the average value was calculated.