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. 2001 Nov;85(5):379–381. doi: 10.1136/adc.85.5.379

The epidemiology of infantile hypertrophic pyloric stenosis in Sweden 1987-96

G Hedback 1, K Abrahamsson 1, B Husberg 1, T Granholm 1, A Oden 1
PMCID: PMC1718980  PMID: 11668097

Abstract

AIMS—To find out whether the incidence of infantile hypertrophic pyloric stenosis (IHPS) has changed over the past decade, and if so, to investigate possible contributory factors.
METHODS—All infants undergoing pyloromyotomy for IHPS in Sweden between 1987 and 1996 were studied. Using the national patient registers the yearly incidence was determined and evaluated in relation to sex, latitude, urbanisation, and type of surroundings by use of a Poisson model.
RESULTS—There was a substantial decline from 2.7/1000 to 0.85/1000 over the time period. The incidence in the south was almost three times greater than in the north.
CONCLUSION—The declining incidence and geographical difference suggest that environmental factors are of importance in this disorder.



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Selected References

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