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Table 1 Age and Sex distribution of primary school children with skin disorders in Dar es Salaam (n = 420)

From: The spectrum of dermatological disorders among primary school children in Dar es Salaam

Skin disorders Sex Age-group (years)   
  M = 213 F
= 207
P-value 6-10
= 156
11-15
= 237
16-19
= 27
TOTAL P-value
  n(%) n(%)   n(%) n(%) n(%)   
Infective skin disorders         
Dermatophytosis 27
(12.6)
21
(10.1)
0.41 23
(21.8)
24
(15.6)
1
(3.7)
48
(11.4)
0.045
Pityriasis versicolor 23
(10.7)
13
(6.2)
0.09 4
(2.5)
26
(10.9)
6
(22.2)
36
(8.6)
0.0004
Pyodermas 9
(4.2)
8
(3.9)
0.85 6
(3.8)
10
(4.2)
1
(3.7)
17
(4.0)
-
Pediculosis capitis 5
(2.3)
10
(4.8)
0.17 7
(4.5)
8
(3.4)
0 15
(3.6)
-
Scabies 4
(1.8)
2
(0.9)
0.70 1
(0.6)
5
(2.1)
0 6
(1.4)
-
Viral warts 2
(0.9)
4
(1.9)
0.65 4
(2.5)
2
(0.8)
0 6
(1.4)
-
Non infective skin disorders         
Acne vulgaris 78
(36.6)
75
(36.2)
0.93 0 143
(60.3)
10
(37.0)
153
(36.4)
-
Non specific ulcers 14
(6.5)
7
(3.4)
0.133 10
(6.4)
11
(5.2)
0 21
(5)
-
Atopic eczema 6
(2.8)
5
(2.4)
0.79 6
(3.8)
4
(1.7)
1
(3.7)
11
(2.6)
-
Birth marks 6
(2.8)
4
(1.9)
0.78 6
(3.8)
3
(1.2)
1
(3.7)
10
(2.3)
-
Seborrheic eczema 3
(1.4)
2
(0.9)
0.97 1
(0.6)
2
(0.8)
2
(7.4)
5
(1.2)
-
Keratosis pilaris 5
(2.3)
0 - 3
(1.9)
2
(0.8)
0 5
(1.2)
-
Angular cheilitis 2
(0.9)
3
(1.4)
0.97 3
(0.6)
2
(0.8)
0 5
(1.2)
-
Vitiligo 3
(1.4)
0 - 1
(0.6)
2
(0.9)
0 3
(0.7)
-
Alopecia areata 1
(0.4)
0 - 0 1
(0.4)
0 1
(0.2)
-
Intertrigo 1
(0.4)
0 - 0 1 0 1
(0.2)
0.000
Non specific dermatoses 29
(13.6)
16
(7.7)
0.05 8
(5.1)
12
(5.0)
25
(92.2)
45
(10.7)
0.0001
Any skin disorder 132
(61.9)
109
(52.6)
0.05 71
(45.5)
148
(62.4)
22
(81.5)
241
(57.3)
 
  1. NB: p-values could not be calculated for conditions with very small numbers