Table 1.
Study cohort characteristics and hospitalization-associated RT interruption likelihood
| Number (%) | Frequency of hospitalization-associated RT interruption, n (%) | |
|---|---|---|
| Total | 3729 | 197 (5.3) |
| Sex | ||
| Male | 1664 (44.6) | 6.0 |
| Female | 2065 (55.4) | 4.7 |
| Age, mean, y | 61.2 | |
| <65 | 2195 (58.9) | 5.1 |
| ≥65 | 1534 (41.1) | 5.6 |
| Race | ||
| White | 2032 (54.5) | 4.4* |
| African-American | 1577 (42.3) | 6.3* |
| Other | 120 (3.2) | 6.7 |
| Ethnicity | ||
| Hispanic | 50 (1.3) | 6.0 |
| Non-Hispanic | 3540 (94.9) | 5.2 |
| Unknown | 139 (3.7) | 7.9 |
| Marital status | ||
| Married | 1967 (52.7) | 4.3* |
| Unmarried | 1648 (44.2) | 6.4* |
| Unknown | 114 (3.1) | 5.3 |
| Patient predicted income | ||
| Low (<$34k) | 1012 (27.1) | 4.4 |
| Middle ($34-67k) | 1532 (41.1) | 5.6 |
| High (>$67k) | 1149 (30.8) | 5.7 |
| Unknown | 36 (1.0) | 5.6 |
| Geography of residence | ||
| Rural not by metro | 114 (3.0) | 0.9 |
| Rural by metro | 201 (5.4) | 3.0 |
| Metro | 3428 (91.6) | 5.6 |
| Distance from RT, mile | ||
| 0-5 | 1108 (29.9) | 6.6 |
| 6-10 | 1175 (31.7) | 5.6 |
| 11-15 | 503 (13.6) | 3.8 |
| 16-20 | 220 (5.9) | 6.9 |
| 21-30 | 253 (6.8) | 4.8 |
| 31-40 | 110 (3.0) | 1.9 |
| >40 | 337 (9.1) | 3.3 |
| Insurance type | ||
| Commercial | 1794 (48.1) | 3.5* |
| Medicare | 1503 (40.3) | 6.3* |
| Medicaid/no insurance | 432 (11.6) | 9.0* |
| Medicaid | 221 (5.9) | 7.7 |
| No insurance | 211 (5.7) | 10.4* |
| Diagnosis | ||
| Breast | 974 (26.1) | 1.7* |
| Prostate | 413 (11.1) | 3.4 |
| Lung | 353 (9.5) | 10.8* |
| Gynecologic | 226 (6.1) | 6.2 |
| Head and neck | 402 (10.8) | 10.7* |
| Gastrointestinal | 238 (6.4) | 5.0 |
| Central nervous system | 148 (4.0) | 4.7 |
| Metastasis | 490 (13.1) | 4.1 |
| Skin | 123 (3.3) | 5.7 |
| Soft tissue | 53 (1.4) | 3.8 |
| Hematologic | 146 (3.9) | 2.7 |
| Other | 163 (4.4) | 13.4 |
| Treatment season | ||
| Nonwinter (March-October) | 2455 (65.8) | 5.7 |
| Winter (November-February) | 1274 (34.2) | 4.6 |
| Prescribed fractions | ||
| 1-5 | 421 (11.3) | 1.2* |
| 6-10 | 494 (13.2) | 5.7 |
| 11-15 | 195 (5.2) | 5.1 |
| 16-20 | 586 (15.7) | 2.2* |
| 21-25 | 368 (9.9) | 4.6 |
| 26-30 | 976 (26.2) | 7.0* |
| >30 | 689 (18.5) | 8.1* |
RT, radiation therapy
⁎
Denotes statistical significance