Characteristics of study participants and nonparticipants
. | Participants, no. (%) . | Nonparticipants, no. (%) . | P . |
|---|---|---|---|
| Sex | .007 | ||
| Female | 264 (45.2) | 148 (36.7) | |
| Male | 320 (54.8) | 255 (63.3) | |
| Race/ethnicity | .005 | ||
| White | 449 (76.9) | 270 (67.0) | |
| Hispanic | 79 (13.5) | 81 (20.1) | |
| Other | 56 (9.6) | 52 (12.9) | |
| Institution | .24 | ||
| COH | 304 (52.1) | 193 (47.9) | |
| UMN | 280 (47.9) | 210 (52.1) | |
| Age at transplantation* | < .001 | ||
| Younger than 21 y | 134 (22.9) | 133 (33.0) | |
| 21-45 y | 293 (50.2) | 244 (60.5) | |
| Older than 45 y | 157 (26.9) | 26 (6.5) | |
| Age at interview† | < .001 | ||
| 18-45 y | 374 (64.0) | 312 (77.4) | |
| Older than 45 y | 210 (36.0) | 91 (22.6) | |
| Time since transplantation‡ | < .001 | ||
| 2-5 y | 209 (35.8) | 99 (24.6) | |
| 6-10 y | 169 (28.9) | 106 (26.3) | |
| 11-28 y | 206 (35.3) | 198 (49.1) | |
| Year of transplantation | .08 | ||
| 1975-1984 | 94 (16.1) | 92 (22.8) | |
| 1985-1994 | 283 (48.5) | 184 (45.7) | |
| 1995-2000 | 207 (35.4) | 127 (31.5) | |
| Diagnosis | .006 | ||
| Aplastic anemia | 56 (9.6) | 72 (17.9) | |
| Acute leukemia | 248 (42.5) | 186 (46.1) | |
| Lymphoma | 44 (7.5) | 16 (4.0) | |
| Immune disorder | 4 (0.7) | 2 (0.5) | |
| Chronic leukemia | 230 (39.4) | 122 (30.3) | |
| Other | 2 (0.3) | 5 (1.2) | |
| Stem cell source | .24 | ||
| Bone marrow | 546 (93.5) | 386 (95.8) | |
| Cord blood | 5 (0.9) | 2 (0.5) | |
| Peripheral blood stem cells | 33 (5.7) | 15 (3.7) | |
| Donor type | .004 | ||
| Related | 478 (81.8) | 350 (86.6) | |
| Unrelated | 106 (18.2) | 53 (13.2) | |
| Conditioning regimen | .02 | ||
| Chemotherapy | 55 (9.4) | 57 (14.1) | |
| Radiation and chemotherapy | 529 (90.6) | 346 (85.9) | |
| cGVHD | .04 | ||
| Yes | 313 (53.6) | 188 (46.7) | |
| No | 271 (46.4) | 215 (53.3) |
. | Participants, no. (%) . | Nonparticipants, no. (%) . | P . |
|---|---|---|---|
| Sex | .007 | ||
| Female | 264 (45.2) | 148 (36.7) | |
| Male | 320 (54.8) | 255 (63.3) | |
| Race/ethnicity | .005 | ||
| White | 449 (76.9) | 270 (67.0) | |
| Hispanic | 79 (13.5) | 81 (20.1) | |
| Other | 56 (9.6) | 52 (12.9) | |
| Institution | .24 | ||
| COH | 304 (52.1) | 193 (47.9) | |
| UMN | 280 (47.9) | 210 (52.1) | |
| Age at transplantation* | < .001 | ||
| Younger than 21 y | 134 (22.9) | 133 (33.0) | |
| 21-45 y | 293 (50.2) | 244 (60.5) | |
| Older than 45 y | 157 (26.9) | 26 (6.5) | |
| Age at interview† | < .001 | ||
| 18-45 y | 374 (64.0) | 312 (77.4) | |
| Older than 45 y | 210 (36.0) | 91 (22.6) | |
| Time since transplantation‡ | < .001 | ||
| 2-5 y | 209 (35.8) | 99 (24.6) | |
| 6-10 y | 169 (28.9) | 106 (26.3) | |
| 11-28 y | 206 (35.3) | 198 (49.1) | |
| Year of transplantation | .08 | ||
| 1975-1984 | 94 (16.1) | 92 (22.8) | |
| 1985-1994 | 283 (48.5) | 184 (45.7) | |
| 1995-2000 | 207 (35.4) | 127 (31.5) | |
| Diagnosis | .006 | ||
| Aplastic anemia | 56 (9.6) | 72 (17.9) | |
| Acute leukemia | 248 (42.5) | 186 (46.1) | |
| Lymphoma | 44 (7.5) | 16 (4.0) | |
| Immune disorder | 4 (0.7) | 2 (0.5) | |
| Chronic leukemia | 230 (39.4) | 122 (30.3) | |
| Other | 2 (0.3) | 5 (1.2) | |
| Stem cell source | .24 | ||
| Bone marrow | 546 (93.5) | 386 (95.8) | |
| Cord blood | 5 (0.9) | 2 (0.5) | |
| Peripheral blood stem cells | 33 (5.7) | 15 (3.7) | |
| Donor type | .004 | ||
| Related | 478 (81.8) | 350 (86.6) | |
| Unrelated | 106 (18.2) | 53 (13.2) | |
| Conditioning regimen | .02 | ||
| Chemotherapy | 55 (9.4) | 57 (14.1) | |
| Radiation and chemotherapy | 529 (90.6) | 346 (85.9) | |
| cGVHD | .04 | ||
| Yes | 313 (53.6) | 188 (46.7) | |
| No | 271 (46.4) | 215 (53.3) |
For participants, n = 584; for nonparticipants, n = 403
COH indicates City of Hope; and UMN, University of Minnesota
The mean for participants was 31.0 y (SD = 12.8 y), and the mean for nonparticipants was 25.4 y (SD = 12.6 y)
The mean for participants was 40.4 y (SD = 10.7 y), and the mean for nonparticipants was 37.0 y (SD = 10.6 y)
The mean for participants was 9.6 y (SD = 6.0 y), and the mean for nonparticipants was 11.6 y (SD = 6.3 y)