Child Skeletal Fluorosis from Indoor Burning of Coal in Southwestern China

Table 2

Detection of skeletal fluorosis (SF) among 370 sampled children according to gender and age, Zhijin, Guizhou, China, 2004.

Age (yr)	Boys		Girls		Total
	Number examined	SF 𝑛 (%)	Number examined	SF 𝑛 (%)	Number examined	SF 𝑛 (%)
7–11	78	21 (26.9)	76	18 (23.7)	154	39 (25.3)
12–16	110	49 (44.5)	106	34 (32.1)	216	83 (33.4)^§
Total	188	70 (37.2)	182	52 (28.6)	370	122 (33.0)

^§Older children (12–16 years) were significantly more likely to be diagnosed with skeletal fluorosis than younger children (7–11 years) (OR = 1.84, 95% CI: 1.17-2.90; 𝑃=.0082).