Table 2 Patient characteristics by their loss to follow-up status
Missing data | Lost to follow-up (N = 41) | Not lost to follow-up (N = 49) | p value | |
|---|---|---|---|---|
Demographic characteristics | ||||
Age, years | 2 | 21.0 [20.0–22.25] | 21.0 [20.0–22.25] | 0.42 |
Female sex | 0 | 25 (61.0) | 26 (53.1) | 0.28 |
Clinical features of vascular malformation | ||||
Vascular malformation type | 1 | 0.059 | ||
Simple venous malformation | 23 (56.1) | 15 (30.6) | ||
Simple lymphatic malformation | 7 (17.1) | 6 (10.2) | ||
Simple arteriovenous malformation | 2 (4.9) | 7 (14.3) | ||
Combined malformation (capillary/venous/lymphatic) | 6 (14.6) | 14 (28.6) | ||
Syndromic malformation | 3 (7.3) | 8 (16.3) | ||
Location* | 1 | 0.53 | ||
Head and neck/tongue | 10 (24.4) | 20 (40.8) | ||
Trunk/gluteal area | 10 (24.4) | 12 (24.5) | ||
Upper limb | 8 (19.5) | 8 (16.3) | ||
Lower limb | 18 (43.9) | 18 (36.7) | ||
Age at diagnosis | 10 | 9.0 [0.0–13.0] | 2.0 [0.0–6.5] | 0.038 |
Previous treatment of malformation* | 0 | 0.055 | ||
Therapeutic abstention | 4 (9.8) | 1 (2.0) | ||
Sclerotherapy/embolization | 18 (43.9) | 24 (49.0) | ||
General drug treatment | 7 (17.1) | 27 (55.0) | ||
Physical treatment (bandages, drainage, laser) | 13 (31.7) | 18 (36.7) | ||
Surgery | 14 (34.2) | 30 (61.2) | ||
Follow-up procedures in the center | ||||
Age at onset of follow-up in the site | 2 | 13.0 [9.0–14.0] | 9.0 [3.5–13.0] | 0.07 |
Type of site | 0 | 0.71 | ||
Pediatric site | 30 (73.2) | 38 (77.5) | ||
Adult site | 1 (2.4) | 0 (0.0) | ||
Mixed site | 10 (24.4) | 11 (22.5) | ||
Transition/change of site during follow-up (from pediatric to adult department) | 1 | 9 (22.5) | 14 (28.6) | 0.23 |
Age at change of site | 2 | 17.0 [16.0–16.5] | 16.0 [14.5–16.5] | 0.09 |
Average number of consultations† | 7 | 0.08 | ||
≤ 1 time per year | 11 (26.8) | 25 (51.0) | ||
> 1 time per year | 30 (73.2) | 24 (49.0) |