Child Skeletal Fluorosis from Indoor Burning of Coal in Southwestern China
Table 3
Distribution of type and grade of Skeletal fluorosis (SF) detected among children in a coal-burning endemic fluorosis area, Zhijin, Guizhou, China, 2004.
Boys
Girls
Total
(%)
(%)
(%)
Type of SF
Constrictive type
46 (37.7)
28 (23.0)
74 (60.7)
Raritas type
9 (7.4)
10 (8.2)
19 (15.6)
Mixed type
8 (6.6)
12 (9.8)
20 (16.4)
Soft type
7 (5.7)
2 (1.6)
9 (7.4)
Total
70 (57.4)
52
122 (100.0)
Grade of SF
Mild
28 (23.0)
26 (21.3)
54 (44.3)
Moderate
34 (27.9)
23 (18.8)
57 (46.7)
Severe
8 (6.6)
3 (2.5)
11 (9.0)
Total
70 (57.4)
52
122 (100.0)
ype of SF does not differ by gender ( 5.472, df 3; ). rade of SF does not differ by gender ( 1.854, df 2; ).
