Pyloric stenosis in Western Australia, 1971-84.

Hitchcock, Nancy E.; Gilmour, A I; Gracey, Michael; Burke, Victoria E.

doi:10.1136/adc.62.5.512

Cited by 19 publications

(29 citation statements)

References 3 publications

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“…These results are similar to those seen in previous studies (summarized in Table 1) that have shown that Asian populations have a lower incidence of IHPS than white populations [6], [7], [8], [10], [11], [12], [14], [15], [16], [17], [18], [19], [25]. The incidence rate of IHPS varies from 0.17 to 4.4 per 1000 live births among different populations around the world [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19]. One study in the United Sates found a generally lower incidence in Asian populations of differing backgrounds such as Chinese (0.18 per 1000 live births), Vietnamese (0.44 per 1000 live births), Asian Indians (0.59 per 1000 live births) and Filipinos (0.43 per 1000 live births) when compared to white populations [25].…”

Section: Discussionsupporting

confidence: 92%

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Epidemiological Features of Infantile Hypertrophic Pyloric Stenosis in Taiwanese Children: A Nation-Wide Analysis of Cases during 1997–2007

et al. 2011

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ObjectiveTo describe the epidemiological characteristics of infantile hypertrophic pyloric stenosis (IHPS) in ethnic Chinese children.Materials and MethodsWe reviewed the National Health Insurance claims database and analyzed data from children less than one year of age who had been diagnosed with IHPS (ICD-9-CM 750.5) and had undergone pyloromyotomy (ICD-9-CM 43.3). We analyzed the incidence, gender, age at diagnosis, length of hospital stay, seasonal variation and cost of IHPS from data collected between January 1997 and December 2007.ResultsA total of 1,077 infants met inclusion criteria, including 889 boys and 188 girls. The annual incidence of IHPS ranged from 0.30 to 0.47 per 1,000 live births with a mean incidence of 0.39 per 1,000 live births. Between 2002 and 2007, the incidence showed a declining trend (P = 0.025) with coincidentally increasing trends for both exclusive breastfeeding (P = 0.014) and breastfeeding plus bottle feeding (P = 0.004). The male-to-female rate ratio was dynamic and increased from 3.03 during the first two weeks of life to 8.94 during the 8th through 10thweeks of life. The overall male-to-female rate ratio was 4.30. The mean age at diagnosis was 43.1±2.4 days. After analyzing the months of birth and hospital admission, no seasonal variation associated with IHPS was detected. The mean length of hospital stay was 8.28±7.10 days.ConclusionsThe incidence of IHPS in Taiwan, a country with a majority ethnic Chinese population, was lower than observed incidences in Caucasian populations living in Western countries. Breastfeeding campaigns and low maternal smoking rates may contribute to the lower incidence of IHPS in Taiwan. However, additional studies with longer follow-up periods are needed.

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Section: Discussionsupporting

confidence: 92%

“…One study has shown that breastfeeding is a protective factor for IHPS [13], [22]. However, another study showed no link between breastfeeding and the incidence of IHPS [11].…”

Section: Introductionmentioning

confidence: 99%

Epidemiological Features of Infantile Hypertrophic Pyloric Stenosis in Taiwanese Children: A Nation-Wide Analysis of Cases during 1997–2007

et al. 2011

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“…No change was identified in three studies—in Denmark from 1950 to 1984,15 in British Columbia during the 1970s,16 and in Western Australia from 1971 to 1984 17. An increasing incidence was found in Minnesota from 1950 to 1984,1 in central Scotland and other parts of UK,2-5 and in Germany during the 1970s and 1980s 6.…”

Section: Discussionmentioning

confidence: 90%

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

Hedbäck¹,

Abrahamsson²,

Husberg³

et al. 2001

Archives of Disease in Childhood

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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 diVerence suggest that environmental factors are of importance in this disorder. (Arch Dis Child 2001;85:379-381)

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“…The prevalence of coexisting malformations was also higher in girls with IHPS (7.5%) than in boys (6.9%), again in contrast to the general population, where boys have a higher prevalence than girls (4.0% vs 3.3%). The high¬ est prevalence of other major malformations occurred in black boys with IHPS, 9.6% compared with 4.1% in the overall black male population (odds ratio, 2.45; 95% con¬ fidence interval 1.62 to 3.68).…”

Section: Multiple Birthsmentioning

confidence: 93%