Table 1.
Epidemiologic and clinical characteristics of patients of multiple myeloma.
| Variable | Category | Number of patients with surgery (percentage) | Number of patients without surgery (percentage) | P value |
|---|---|---|---|---|
| Sex | ||||
| Male | 83 (61%) | 103 (54%) | P > 0.05 | |
| Female | 52 (39%) | 87 (46%) | P > 0.05 | |
| Age (years) | ||||
| <60 | 75 (56%) | 88 (46%) | P > 0.05 | |
| ≥60 | 60 (44%) | 102 (54%) | P > 0.05 | |
| Heavy chain | P < 0.05 | |||
| IgG | 58 (55%) | 88 (59%) | ||
| IgA | 29 (28%) | 37 (25%) | ||
| IgD | 3 (3%) | 19 (13%) | ||
| IgM | 0 | 0 | ||
| IgE | 0 | 0 | ||
| No heavy chain | 15 (14%) | 6 (4%) | ||
| missing | 30 (22%) | 40 (21%) | ||
| Light chain | P < 0.05 | |||
| λ light chain | 43 (37%) | 93 (51%) | ||
| κ light chain | 73 (63%) | 91 (49%) | ||
| ISS stage | P < 0.05 | |||
| I | 29 (25%) | 24 (13%) | ||
| II | 41 (35%) | 79 (42%) | ||
| III | 46 (40%) | 85 (45%) | ||
| DS stage | P > 0.05 | |||
| I | 4 (3%) | 8 (4%) | ||
| II | 13 (11%) | 19 (10%) | ||
| III | 103 (86%) | 163 (86%) | ||
| ALB (g/dl) | ≥35 | 24 (17%) | 43 (23%) | P > 0.05 |
| <35 | 111 (83%) | 147 (77%) | P > 0.05 | |
| Method of therapy | Surgery + traditional chemotherapy | Traditional therapy | ||
Data are presented as number (%) or median (range). Difference of variables were tested by Chi-square or Fisher exact test. P < 0.05 or P < 0.01 was considered statistically significant.
ISS, stage, International Stage System; DS, stage, Durie-Salmon System; ALB, Albumin.
The statistical analysis involved chi-square tests to determine P values for categorical variables. Fisher's exact test was employed specifically for categorical variables where expected cell counts were below five. For continuous data, comparisons of mean values were conducted using ANOVA tests.