Table 1.
Demographic characteristics of patients with pPCL and MM in the SEER 18 registry during the 1973-2009 period
| Variables (no., %) | PCL (N = 445) | MM (N = 66 862) | P value |
|---|---|---|---|
| Age (median, range) | 66 (19-98) | 69 (9-106) | <.001 |
| ≥65 y | 239 (54%) | 42 427 (63%) | |
| Male | 220 (49%) | 35 950 (54%) | .068 |
| Race | .096 | ||
| White | 339 (76%) | 51 306 (77%) | |
| Black | 90 (20%) | 11 738 (17%) | |
| Other | 16 (4%) | 3 818 (6%) | |
| Registry location | .135 | ||
| Northeast | 75 (17%) | 13 381 (20%) | |
| Midwest | 76 (17%) | 10 988 (16%) | |
| South | 80 (18%) | 9 691 (15%) | |
| West | 214 (48%) | 32 802 (49%) | |
| Period of diagnosis* | .002 | ||
| 1973-1995 | 120 (27%) | 22 171 (33%) | |
| 1996-2000 | 58 (13%) | 10 188 (15%) | |
| 2001-2005 | 131 (29%) | 18 396 (28%) | |
| 2006-2009 | 136 (31%) | 16 107 (24%) |
P values in bold are statistically significant (P < .05).
*
Registry locations: West—Utah, New Mexico, Hawaii, California, Alaska, and Washington; Northeast—Connecticut and New Jersey; South—Louisiana, Kentucky, and Georgia; and Midwest—Iowa and Michigan.