Table 2.
Comparison of characteristics between patients with musculoskeletal involvement and propensity-score matched patients without musculoskeletal involvement
| Factor |
Total (N=243) |
No MSK involvement (N=162) |
MSK involvement (N=81) |
P value |
|---|---|---|---|---|
| Age, years | 1 | |||
| 0-10 | 187 (77) | 125 (77.2) | 62 (76.5) | |
| >10 | 56 (23) | 37 (22.8) | 19 (23.5) | |
| Sex | 0.891 | |||
| Male | 135 (55.6) | 89 (54.9) | 46 (56.8) | |
| Female | 108 (44.4) | 73 (45.1) | 35 (43.2) | |
| Year of diagnosis | 0.981 | |||
| 1979-1999 | 74 (30.5) | 50 (30.9) | 24 (29.6) | |
| 2000-2009 | 83 (34.2) | 55 (34) | 28 (34.6) | |
| 2010-2019 | 86 (35.4) | 57 (35.2) | 29 (35.8) | |
| Morphology | 1 | |||
| B-cell ALL | 150 (61.7) | 100 (61.7) | 50 (61.7) | |
| T-cell ALL | 9 (3.7) | 6 (3.7) | 3 (3.7) | |
| FAB classification | 57 (23.5) | 38 (23.5) | 19 (23.5) | |
| AML | 27 (11.1) | 18 (11.1) | 9 (11.1) | |
| WBC, ×109/L | 1 | |||
| <50 | 27 (11.1) | 18 (11.1) | 9 (11.1) | |
| ≥50 | 216 (88.9) | 144 (88.9) | 72 (88.9) |
Values are expressed as n (%). ALL, acute leukemia; AML; acute myeloid leukemia, FAB, French-American-British classification system; MSK, musculoskeletal; WBC, white blood cell