Temporal trends in sudden infant death syndrome in Canada from 1991 to 2005: contribution of changes in cause of death assignment practices and in maternal and infant characteristics (original) (raw)
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Epidemiology of SIDS and Explained Sudden Infant Deaths
2009
ABSTRACT. Objectives. To establish whether epide- miologic characteristics for sudden infant death syn- drome (SIDS) have changed since the decrease in death rate after the “Back to Sleep” campaign in 1991, and to compare these characteristics with sudden and unex- pected deaths in infancy (SUDI) from explained causes. Design. Three-year, population-based, case-control study. Parental interviews were conducted soon after the
2008
Avon SIDS epidemiology paper 18/11/2008 1 draft Acknowledgement. Abstract 249 words (limit 250 words) Background: Recent case-control studies suggest the epidemiology of Sudden Infant Death Syndrome (SIDS) may have changed since the 1991 'Back to Sleep' campaign and subsequent fall in rates. A unique collection of longitudinal data is used to measure these potential changes. Methods: Population-based data from home visits have been collected for 369 consecutive unexpected infant deaths (300 SIDS and 69 explained deaths) in Avon over a 20 -year period (1984-2003). Data collected between 1993-6 from 1300 control infants with a chosen sleep prior to interview has also been used for reference. Findings: Social deprivation was increasingly more common amongst SIDS families; the proportion of social class IV,V & unemployed families rose from 47% to 74% (p<0.003), 86% of the mothers smoke, 40% are now single, and 16% are aged less than 20. Although many SIDS infants come from large families, first-born infants are now the most common group. The proportion of co-sleeping SIDS deaths increased from 12% to 50% (p<0.0001), but the actual number of SIDS deaths in the parental bed fell significantly (p=0.01). This rise in proportion is due partly to the limited effect of the "Back to Sleep" campaign on factors in this sleeping environment and partly to a rise in the number of bedsharing deaths on sofas. Infants who die as SIDS whilst bedsharing are now 4-5 weeks younger at death than in the 1980's. Interpretation: Changes in the epidemiology of SIDS have implications both in the interpretation of causal mechanisms and how we should conduct future studies. Avon SIDS epidemiology paper 18/11/2008 3 draft 1 Daltveit AK, Oyen N, Skjaerven R, Irgens. The epidemic of SIDS in Norway 1967-93: changing effects of risk factors.
Sudden infant death syndrome: a re-examination of temporal trends
BMC Pregnancy and Childbirth, 2012
Background: While the reduction in infants' prone sleeping has led to a temporal decline in Sudden Infant Death Syndrome (SIDS), some aspects of this trend remain unexplained. We assessed whether changes in the gestational age distribution of births also contributed to the temporal reduction in SIDS. Methods: SIDS patterns among singleton and twin births in the United States were analysed in 1995-96 and 2004-05. The temporal reduction in SIDS was partitioned using the Kitagawa decomposition method into reductions due to changes in the gestational age distribution and reductions due to changes in gestational age-specific SIDS rates. Both the traditional and the fetuses-at-risk models were used. Results: SIDS rates declined with increasing gestation under the traditional perinatal model. Rates were higher at early gestation among singletons compared with twins, while the reverse was true at later gestation. Under the fetuses-at-risk model, SIDS rates increased with increasing gestation and twins had higher rates of SIDS than singletons at all gestational ages. Between 1995-96 and 2004-05, SIDS declined from 8.3 to 5.6 per 10,000 live births among singletons and from 14.2 to 10.6 per 10,000 live births among twins. Decomposition using the traditional model showed that the SIDS reduction among singletons and twins was entirely due to changes in the gestational age-specific SIDS rate. The fetuses-at-risk model attributed 45% of the SIDS reduction to changes in the gestational age distribution and 55% of the reduction to changes in gestational age-specific SIDS rates among singletons; among twins these proportions were 64% and 36%, respectively. Conclusion: Changes in the gestational age distribution may have contributed to the recent temporal reduction in SIDS.
The Lancet, 2006
Avon SIDS epidemiology paper 18/11/2008 1 draft Acknowledgement. Abstract 249 words (limit 250 words) Background: Recent case-control studies suggest the epidemiology of Sudden Infant Death Syndrome (SIDS) may have changed since the 1991 'Back to Sleep' campaign and subsequent fall in rates. A unique collection of longitudinal data is used to measure these potential changes. Methods: Population-based data from home visits have been collected for 369 consecutive unexpected infant deaths (300 SIDS and 69 explained deaths) in Avon over a 20 -year period (1984-2003). Data collected between 1993-6 from 1300 control infants with a chosen sleep prior to interview has also been used for reference. Findings: Social deprivation was increasingly more common amongst SIDS families; the proportion of social class IV,V & unemployed families rose from 47% to 74% (p<0.003), 86% of the mothers smoke, 40% are now single, and 16% are aged less than 20. Although many SIDS infants come from large families, first-born infants are now the most common group. The proportion of co-sleeping SIDS deaths increased from 12% to 50% (p<0.0001), but the actual number of SIDS deaths in the parental bed fell significantly (p=0.01). This rise in proportion is due partly to the limited effect of the "Back to Sleep" campaign on factors in this sleeping environment and partly to a rise in the number of bedsharing deaths on sofas. Infants who die as SIDS whilst bedsharing are now 4-5 weeks younger at death than in the 1980's. Interpretation: Changes in the epidemiology of SIDS have implications both in the interpretation of causal mechanisms and how we should conduct future studies. Avon SIDS epidemiology paper 18/11/2008 3 draft 1 Daltveit AK, Oyen N, Skjaerven R, Irgens. The epidemic of SIDS in Norway 1967-93: changing effects of risk factors.
International Journal of Pediatrics, 2015
Introduction Sudden Infant Death Syndrome (SIDS) is a disease which causes unexpected death of infants aged less than 1 year. Given the undeniable role of parents in the presence or absence of SIDS risk factors, the present study aimed to studythe prevalence and the relationship between characteristics and conditions of parent’s infants with SIDS risk factors. Materials and Methods In this cross-sectional descriptive-analytic study, 1,021 infants aged 1 to 12 months in the health centers in Qom-Iran in 2014 were selected as the sample by stratified random sampling method. The required data were collected using an author-made questionnaire on SIDS risk factors. The obtained data were analyzed by descriptive and inferential statistics in SPSS 18 at a significance level of 95%. Results 4.5% of mothers were younger than 20 years, 92.3% infants had a co-sleeping with their parents, and 35.7% of infants had a bed-sharing with their parents. 19% of infants used Soft pillow. Study finding...
(Pages: 1135-1143) Risk Factors for Sudden Infant Death Syndrome (SIDS)
2015
Introduction Sudden Infant Death Syndrome (SIDS) is a disease which causes unexpected death of infants aged less than 1 year. Given the undeniable role of parents in the presence or absence of SIDS risk factors, the present study aimed to study the prevalence and the relationship between characteristics and conditions of parent's infants with SIDS risk factors. Materials and Methods In this cross-sectional descriptive-analytic study, 1,021 infants aged 1 to 12 months in the health centers in Qom-Iran in 2014 were selected as the sample by stratified random sampling method. The required data were collected using an author-made questionnaire on SIDS risk factors. The obtained data were analyzed by descriptive and inferential statistics in SPSS 18 at a significance level of 95%. Results 4.5% of mothers were younger than 20 years, 92.3% infants had a co-sleeping with their parents, and 35.7% of infants had a bed-sharing with their parents. 19% of infants used Soft pillow. Study find...