Table 1.
Characteristics of patients with invasive primary cutaneous melanoma.
| Characteristics | n = 1240 | |
|---|---|---|
| Mean age in years (SD) | 64 (±15.4) | |
| Gender (n, %) | Female | 497 (40.0) |
| Male | 741 (59.8) | |
| Not specified | 2 (0.2) | |
| Number of patients grouped by hospital in which diagnosis was received (n, %) | Aarau | 152 (12.3) |
| Basel | 195 (15.7) | |
| Lucerne | 130 (10.5) | |
| St. Gallen | 184 (14.8) | |
| Zurich | 579 (46.7) | |
| Breslow thickness (median, (Q1–Q3)) [mm] | Total | 1.2 (0.7–2.6) |
| Women | 1.1 (0.6–2.2) | |
| Men | 1.4 (0.8–2.8) | |
| Pre-lockdown 1 | 1.2 (0.6–2.6) | |
| Women | 1.1 (0.5–2.1) | |
| Men | 1.4 (0.7–2.8) | |
| Lockdown 1 | 1.4 (0.7–3.0) | |
| Women | 1.2 (0.7–3.0) | |
| Men | 1.4 (0.7–3.0) | |
| Post-lockdown 1 | 1.2 (0.8–2.5) | |
| Women | 1.2 (0.7–2.4) | |
| Men | 1.3 (0.8–2.7) | |
| Stage (8th edition AJCC; n, %) | Stage I | 695 (57.0) |
| IA | 461 (37.2) | |
| IB | 234 (18.9) | |
| Stage II | 254 (20.5) | |
| IIA | 115 (9.3) | |
| IIB | 88 (7.1) | |
| IIC | 51 (4.1) | |
| Stage III | 233 (18.8) | |
| IIIA | 46 (3.7) | |
| IIIB | 63 (5.1) | |
| IIIC | 114 (9.2) | |
| IIID | 8 (0.7) | |
| III (not specified) * | 2 (0.2) | |
| Stage IV | 54 (4.4) | |
| Stage not specified | 4 (0.3) | |
| Ulceration (n, %) | Yes | 240 (19.4) |
| No | 914 (73.7) | |
| Not specified | 86 (6.9) | |
| Melanoma subtype (n, %) | Superficial spreading | 543 (43.8) |
| Nodular | 230 (18.5) | |
| Lentigo maligna | 144 (11.6) | |
| Acral | 43 (3.5) | |
| Others ** | 38 (3.1) | |
| Amelanotic | 13 (1.0) | |
| Not specified | 229 (18.5) | |
Note: 1 Pre-lockdown period = 01/FEB/19–15/MAR/20, lockdown period = 16/MAR/20–22/JUN/20, post-lockdown period = 23/JUN/20–30/APR/21. * Substage was not reported. ** Others = Spindle cell melanoma, blue naevus melanoma, ex naevus melanoma, desmoplastic melanoma, naevoid melanoma, mixed epithelioid spindle cell melanoma. N = sample size, SD = standard deviation, Q1 and Q3 = quartile 1 and quartile 3, resp.