Table 1: Prevalence of skin allergies in adolescents in Namibia.
Factor | Atopic dermatitis | Contact dermatitis | Urticaria | Angioedema | Hay fever | Total | p-value |
Age group | 0.064 | ||||||
15-17 | 13 (20.0) | 6 (12.8) | 2 (10.0) | 4 (44.4) | 1 (11.1) | 26 (17.3) | |
18-20 | 11 (16.9) | 5 (10.6) | 4 (20.0) | 1 (11.1) | 1 (11.1) | 22 (14.7) | |
21-23 | 12 (18.5) | 9 (19.1) | 4 (20.0) | 2 (22.2) | 0 (0) | 27 (18.0) | |
24-26 | 13 (20.0) | 13 (27.7) | 5 (25.0) | 1 (11.1) | 2 (22.2) | 34 (22.7) | |
27-30 | 16 (24.6) | 14 (29.8) | 5 (25.0) | 1 (11.1) | 5 (55.6) | 41 (27.3) | |
Gender | 0.245 | ||||||
Males | 22 (33.8) | 24 (51.1) | 9 (45.0) | 4 (44.4) | 3 (33.3) | 62 (41.3) | |
Females | 43 (66.2) | 23 (48.9) | 11(55.0) | 5 (55.5) | 6 (66.7) | 88 (58.7) | |
Ethnic group | 0.536 | ||||||
Vamboes | 21 (32.3) | 13 (27.2) | 11(55.0) | 3 (33.3) | 3 (33.3) | 51 (34.0) | |
Herero | 10 (15.4) | 8 (17.2) | 3 (15.0) | 1 (11.1) | 1 (11.1) | 23 (15.3) | |
Damara/Nama | 5 (7.7) | 6 (12.8) | 3 (15.0) | 0 | 0 | 14 (9.3) | |
Coloured | 10 (15.4) | 2 (4.3) | 1 (5.0) | 2 (22.2) | 3 (33.3) | 18 (12.0) | |
Kavango | 4 (6.2) | 3 (6.4) | 0 | 1 (11.1) | 0 | 8 (5.3) | |
Caprivians | 3 (4.3) | 6 (12.8) | 0 | 1 (11.1) | 1 (11.1) | 11 (7.3) | |
Tswana | 3 (4.3) | 5 (10.6) | 1 (5.0) | 1 (11.1) | 1 (11.1) | 11 (7.3) | |
Others | 9 (13.8) | 4 (8.5) | 1 (5.0) | 0 | 0 | 14 (9.3) | |
Occupation | 0.042 | ||||||
Cleaning | 6 (9.2) | 8 (17.0) | 2 (10.0) | 0 | 1 (11.1) | 17 (11.3) | |
Farming | 3 (4.6) | 3 (6.4) | 2 (10.0) | 0 | 1 (11.1) | 9 (6.0) | |
Office work | 6 (9.2) | 2 (4.3) | 1 (5.0) | 1 (11.1) | 2 (22.2) | 12 (8.0) | |
Street business | 6 (9.2) | 7 (14.9) | 2 (10.0) | 0 | 0 | 15 (10.0) | |
Security guard | 4 (6.2) | 2 (4.3) | 1 (5.0) | 0 | 0 | 7 (4.7) | |
Hair dresser | 4 (6.2) | 3 (6.4) | 2 (10.0) | 0 | 1 (11.1) | 10 (6.7) | |
Students | 33 (50.8) | 18 (38.3) | 6 (30.0) | 3 (33.3) | 1 (11.1) | 61 (40.7) | |
Others | 3 (4.6) | 4 (8.4) | 4 (20.0) | 5 (55.6) | 3 (33.3) | 19 (12.7) | |
Possible causes | 0.026 | ||||||
Medication | 5 (7.7) | 4 (8.5) | 1 (5.0) | 1 (11.1) | 0 | 11 (7.3) | |
Weather change | 10 (15.4) | 8 (17.0) | 11 (55.0) | 4 (44.4) | 2 (22.2) | 35 (23.3) | |
Dust/sweat | 7 (10.8) | 1 (2.1) | 4 (20.0) | 1 (11.1) | 1 (11.1) | 14 (9.3) | |
Clothes | 4 (6.2) | 4 (8.5) | 1 (5.0) | 0 | 2 (22.2) | 11 (7.3) | |
Cosmetics | 8 (12.3) | 5 (10.6) | 0 | 0 | 0 | 13 (8.7) | |
Jewelleries | 5 (7.7) | 4 (8.5) | 0 | 0 | 0 | 9 (6.0) | |
Family (genetics) | 8 (12.3) | 0 | 0 | 0 | 0 | 8 (5.3) | |
Detergents/plants | 6 (9.2) | 11 (23.4) | 2 (10.0) | 2 (22.2) | 3 (33.3) | 24 (16.0) | |
Pollen/food | 12 (18.5) | 10 (21.3) | 1 (5.0) | 1 (11.1) | 1 (11.1) | 25 (16.7) | |
Total | 65 (43.4) | 47 (31.3) | 20 (13.3) | 9 (6) | 9 (6) | 150 (100) |
All percentages are given in parentheses. The denominator for all row /column total percentages is sample size 150 but the denominators for all cell percentages are the respective column totals.