Trends in pediatric circumcision in Belgium and the Brussels University Hospital from



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Statistical analysis


From 2002 to 2005, the total number of circumcisions performed in Belgium was listed; there was no division in age groups. The yearly total number of circumcised boys aged 0 to 15 years was estimated in this period. The circumcision rate of persons aged 16 years and older remained stable between 2006 and 2011 at an average of 1.17 per 1000 persons per year. This yearly circumcision rate was calculated by dividing the number of circumcised persons older than 16 years by the mid-year estimate of the number of persons in that age group. The mean circumcision rate was extrapolated to the years 2002 to 2005 for this age group. There is no reason to believe this circumcision rate changed and study showed that this circumcision rate remained stable from 1981 to 1999.55 Thus the yearly total number of circumcisions and the circumcision rate of boys aged 0 to 15 years old could be estimated (cf. infra “Attachment 3”).

The Belgian circumcision rate of boys aged 0 to 15 years was calculated from the year 2002 to 2011. To calculate the circumcision rate in a reporting year, the number of boys who underwent circumcision in that year was divided by the mid-year estimate of the number of boys aged less than 16 years living in Belgium.

The proportion of boys who would undergo circumcision by their 16th birthday, if the circumcision rate in a specific reporting year remained unchanged, was estimated by multiplying the circumcision rate between 0 and 15 years by 16.

The circumcision rate per indication was calculated by extrapolating the yearly percentage of each indication in the Brussels University Hospital to a national level. The circumcision rate is also calculated per age group. There are 3 different groups: boys from 0 to 4 years of age, boys from 5 to 9 years of age and boys from 10 to 15 years of age. The yearly percentage of circumcisions in each age group in the Brussels University Hospital was extrapolated to the national number of circumcisions. To calculate the circumcision rate per age group, this figure was divided by the number of Belgian boys in these age groups. The indications to circumcise stratified by age group are calculated on a national level by extrapolating the percentages of the Brussels University Hospital to the Belgian figures.





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