Table 1.
Participant Characteristics of the Cohort Over Time (T1, T2, T3)
| Full Cohort T1 (N = 195) |
First Follow-up T2 (N = 65) |
Current Follow-up T3 (N = 30) |
||
|---|---|---|---|---|
| Age in years | M (SD), range | 40.8 (11.6), 18–70 | 44.5 (12.1), 23–72 | 52.33 (11.52), 36–72 |
| Age at diagnosis | M (SD), range | 34.3 (12.5), 8–65 | 32.0 (13.6), 8–62 | 25.97 (12.44), 8–50 |
| Sex, N(%) | Male | 120 (61.5) | 36 (55.4) | 15 (50.0) |
| Female | 75 (38.5) | 29 (44.6) | 15 (50.0) | |
| Level of education, N(%) | Low | 58 (29.7) | 21 (32.3) | 5 (16.7) |
| Middle | 74 (37.9) | 22 (33.8) | 11 (36.7) | |
| High | 60 (30.8) | 22 (33/8) | 13 (43.3) | |
| Other | 3 (1.5) | 0 (0) | 1 (3.3) | |
| Marital status, N(%) | Single | 56 (28.7) | 17 (26.2) | 6 (20.0) |
| Married or living together | 124 (63.6) | 38 (58.5) | 20 (66.7) | |
| Divorced | 6 (3.1) | 7 (10.8) | 2 (6.7) | |
| Widowed | 6 (3.1) | 3 (4.6) | 2 (6.7) | |
| Missing | 3 (1.5) | 0 (0) | 0 (0) | |
| Tumor type, N(%) | Astrocytoma | 127 (65.1) | 47 (72.3) | 25 (83.3) |
| Oligoastrocytoma | 12 (6.2) | 7 (10.7) | 2 (6.7) | |
| Oligodendroglioma | 39 (20.0) | 11 (16.9) | 3 (10.0) | |
| Missing | 17 (8.7) | 0 (0) | 0 (0) | |
| WHO tumor grade, N(%) | I | 11 (5.6) | 7 (10.8) | 0 (0) |
| II | 163 (83.6) | 57 (87.7) | 30 (100) | |
| Missing | 21 (10.8) | 1 (1.5) | 0 (0) | |
| Neurosurgical intervention, N(%) | Biopsy | 71 (36.4) | 19 (29.2) | 7 (23.3) |
| Resection | 94 (48.2) | 41 (63.1) | 20 (66.7) | |
| Craniotomy, unspecified | 12 (6.2) | 5 (7.7) | 3 (10.0) | |
| Missing | 18 (9.2) | 0 (0) | 0 (0) | |
| Radiotherapy (ever), N (%) | Yes | 104 (53.3) | 32 (49.0) | 13 (43.3) |
| No | 91 (46.7) | 33 (51.0) | 17 (56.7) | |
| Recurrence (ever), N (%) | Yes | 19 (9.7) | 0 (0) | 6 (20.0) |
| No | 154 (79.0) | 65 (100) | 23 (76.7) | |
| Missing | 19 (9.7) | 0 (0) | 1 (3.3) |