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. 2016 Aug 30;88(1):96–100. doi: 10.1080/17453674.2016.1227055

Table 3.

Educational level of the parents in relation to the incidence (per 100,000) of Perthes’ disease

Years of education Men Women
< 11 11.5 12.2
11–13 9.4 10.0
≥ 14 7.7 7.3