Table 1.
Demographic and clinical characteristics of 121 patients who were included in our study
|
|
Patients with a PMH of MM, n = 26/121 (21.5%)
|
Patients with AMS,
n
=
47/121 (38.8%)
|
Control group, n = 48/121 (39.7%) |
All participants, n = 121 |
P
value
|
| Mean age (± SD) | 45.65 (± 12.61) | 43.21 (± 12.61) | 43.67 (± 12.65) | 43.92 (± 12.55) | 0.88 |
| Gender, n (%) | 0.39 | ||||
| Male | 10/26 (38.5) | 25/47 (53.2) | 20/48 (41.7) | 55/121 (45.5) | |
| Female | 16/26 (61.5) | 22/47 (46.8) | 28/48 (58.3) | 66/121 (54.5) | |
| Employment Status, n (%) | 0.40 | ||||
| Student | 2/26 (7.7) | 3/47 (6.4) | 2/48 (4.2) | 7/121 (5.8) | |
| Employed | 16/26 (61.5) | 36/47 (76.6) | 33/48 (68.8) | 85/121 (70.2) | |
| Unemployed | 2/26 (7.7) | 4/47 (8.5) | 7/48 (14.6) | 13/121 (10.7) | |
| Retired | 5/26 (19.2) | 3/47 (6.4) | 3/48 (6.3) | 11/121 (9.1) | |
| Housewife | 1/26 (3.8) | 1/47 (2.1) | 3/48 (6.3) | 5/121 (4.1) | |
| Educational level, n (%) | 0.61 | ||||
| Elementary school | 9/26 (34.6) | 1/47 (2.1) | 3/48 (6.3) | 4/121 (3.3) | |
| High school | 0/26 (0) | 20/47 (42.6) | 21/48 (43.8) | 50/121 (41.3) | |
| Technical studies | 6/26 (23.1) | 8/47 (17) | 5/48 (10.4) | 19/121 (15.7) | |
| University level | 11/26 (42.3) | 18/47 (38.3) | 19/48 (39.6) | 48/121 (39.7) | |
| Fitzpatrick skin phototype, n (%) | 0.81 | ||||
| Skin type I (Always burns, does not tan) | 0/26 (0) | 2/47 (4.3) | 2/48 (4.2) | 4/121 (3.3) | |
| Skin type II (Burns easily, tans poorly) | 10/26 (38.5) | 14/47 (29.8) | 15/48 (31.3) | 39/121 (32.2) | |
| Skin type III (Tans after initial burn) | 14/26 (53.8) | 24/47 (51.1) | 22/48 (45.8) | 60/121 (49.6) | |
| Skin type IV (Burns minimally, tans easily) | 2/26 (7.7) | 7/47 (14.9) | 9/48 (18.8) | 18/121 (14.9) | |
| BMI (± SD) | 25.07 (± 4.06) | 26.92 (± 5.12) | 25.58 (± 5.20) | 25.99 (± 4.96) | 0.281 |
| Eye colour, n (%) | 0.466 | ||||
| Dark | 1/26 (3.8) | 2/47 (4.3) | 5/48 (10.4) | 8/121 (6.6) | |
| Brown | 16/26 (61.5) | 31/47 (66) | 31/48 (64.4) | 78/121 (64.5) | |
| Blue | 3/26 (11.5) | 9/47 (19.1) | 5/48 (10.4) | 17/121 (14) | |
| Green | 6/26 (23.1) | 5/47 (10.6) | 7/48 (14.6) | 18/121 (18) | |
| Natural hair color, n (%) | 0.649 | ||||
| Red | 0/26 (0) | 1/47 (2.1) | 0/48 (0) | 1/121 (0.8) | |
| Blond | 5/26 (19.2) | 6/47 (12.8) | 8/48 (16.7) | 19/121 (15.7) | |
| Brown | 16/26 (61.5) | 34/47 (72.3) | 28/48 (58.3) | 78/121 (64.5) | |
| Black | 5/26 (19.2) | 6/47 (12.8) | 12/48 (25) | 23/121 (19) | |
| Number of naevi, n (%) | 0.000 | ||||
| < 25 naevi | 9/26 (34.6) | 0/47 (0) | 23/48 (47.9) | 32/121 (26.4) | |
| 25-50 naevi | 8/26 (30.8) | 2/47 (4.3) | 12/48 (25) | 22/121 (18.2) | |
| 50-100 naevi | 3/26 (11.5) | 11/47 (23.4) | 7/48 (14.6) | 21/121 (17.4) | |
| 100 naevi | 6/26 (23.1) | 34/47 (72.3) | 6/48 (12.5) | 46/121 (38) | |
| Smoking status, n (%) | |||||
| Current smoker | 8/26 (30.8) | 15/47 (31.9) | 9/48 (18.8) | 32/121 (26.4) | 0.198 |
| No smoker | 15/26 (57.7) | 25/47 (53.2) | 28/48 (58.3) | 68/121 (56.2) | |
| Ex-smoker | 3/26 (11.5) | 7/47 (14.9) | 11/48 (22.9) | 21/121 (17.4) | |
| Sunburn before the age of 18, n (%) | 0.000 | ||||
| No | 9/26 (34.6) | 30/47 (63.8) | 40/48 (83.3) | 79/121 (65.3) | |
| Yes | 17/26 (65.4) | 17/47 (36.2) | 8/48 (16.7) | 42/121 (34.7) | |
| Leisure sun exposure, n (%) | 0.393 | ||||
| No | 17/26 (65.4) | 31/47 (66) | 38/48 (79.2) | 86/121 (71.1) | |
| Yes | 9/26 (34.6) | 16/47 (34) | 10/48 (20.8) | 35/121 (28.9) | |
| Occupational sun exposure, n (%) | 0.35 | ||||
| No | 19/26 (73.1) | 27/47 (57.4) | 30/48 (62.5) | 76/121 (62.8) | |
| Yes | 7/26 (26.9) | 20/47 (42.6) | 18/48 (37.5) | 45/121 (37.2) | |
| Significant time spent outdoors, n (%) | 0.356 | ||||
| No | 11/26 (42.3) | 24/47 (51.1) | 28/48 (58.3) | 63/121 (52.1) | |
| Yes | 15/26 (57.7) | 23/47 (48.9) | 20/48 (42.7) | 58/121 (47.9) | |
| Mean weeks of vacation spent before the age of 10 (± SD) | 7.35 ± 5.61 | 6.87 ± 5 | 7.42 ± 4.36 | 7.19 ± 4.86 | 0.7444 |
| Mean weeks of vacation spent before from the age of 11 till 18 (± SD) | 6.12 ± 4.27 | 6.38 ± 4.44 | 6.94 ± 4.20 | 6.55 ± 4.29 | 0.740 |
| Mean weeks of vacation spent after the age of 18 (± SD) | 3.92 ± 2.1 | 4.02 ± 2.77 | 4.98 ± 4.35 | 4.39 ± 3.40 | 0.806 |
AMS: Atypical mole syndrome; PMH: Past medical history; MM: Malignant melanoma; SD: Standard deviation; BMI: Body mass index.