Who Underreports Smoking on Birth Records: A Monte Carlo Predictive Model with Validation

Land, Thomas; Landau, Anna; Manning, Susan E.; Purtill, Jane K.; Pickett, Kate E.; Wakschlag, Lauren S.; Dukić, Vanja

doi:10.1371/journal.pone.0034853

Cited by 24 publications

(25 citation statements)

References 19 publications

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“…Third, smoking can be underreported on birth certificates and thus, the results of the sensitivity analysis may not have fully captured the extent to which maternal smoking underlies the relationship between maternal nativity and abdominal wall defects. 39 Fourth, we did not examine maternal alcohol usage because the correlation between birth certificate data and actual maternal alcohol use is very weak. 40 Fifth, there is heterogeneity within Mexican Americans with respect to region of origin in Mexico, US migration patterns, and region of residence in the United States.…”

Section: Discussionmentioning

confidence: 99%

Abdominal Wall Defects Among Mexican American Infants: The Effect of Maternal Nativity

Hibbs¹,

Bennett

Castro³

et al. 2016

Ethn Dis

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Background: US-born Mexican American women have greater rates of preterm birth and consequent overall infant mortality than their Mexico-born peers. However, the relation of Mexican American women’s nativity to rates of congenital anomalies is poorly understood. Hispanic ethnicity and young maternal age are well-known risk factors for gastroschisis. Objective: To determine the extent to which nativity of Mexican American women is associated with abdominal wall defects.Methods: Stratified and multivariable logistic regression analyses were performed on the 2003-2004 National Center for Health Statistics linked live birth-infant death cohort. Only Mexican American infants were studied. Maternal variables examined included nativity, age, education, marital status, parity, and prenatal care usage.Results: Infants with US-born Mexican American mothers (n=451,272) had an abdominal wall defect rate of 3.9/10,000 compared with 2.0/10,000 for those with Mexico-born mothers (n=786,878), RR=1.9 (1.5-2.4). Though a greater percentage of US-born (compared wtih Mexico-born) Mexican American mothers were teens, the nativity disparity was actually widest among women in their 20s. The adjusted (controlling for maternal age, education, marital status, parity, and prenatal care) odds ratio of abdominal wall defects among infants of US-born (compared with Mexico-born) Mexican American mothers was 1.6 (1.2-2.0).Conclusions: US-born Mexican American women have nearly a two-fold greater rate of delivering an infant with an abdominal wall defect than their Mexico-born counterparts. This phenomenon is only partially explained by traditional risk factors and highlights a detrimental impact of lifelong residence in the United States, or something closely related to it, on the pregnancy outcome of Mexican American women. Ethn Dis; 2016;26(2):165-170; doi:10.18865/ed.26.2.165

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Section: Discussionmentioning

confidence: 99%

Abdominal Wall Defects Among Mexican American Infants: The Effect of Maternal Nativity

Hibbs¹,

Bennett

Castro³

et al. 2016

Ethn Dis

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“…This study has shown that linked data differentially increased the ascertainment of smokers, not only in women who are at higher risk of adverse outcomes (older age, multi-fetus pregnancy, diabetes, hypertension) but also in women who are known to underreport their smoking status (older age, married, immigrants from non-English speaking countries, and high socioeconomic status). 23,26,27 Factors contributing to voluntary disclosure of smoking among 51 In addition, it is also important that linking the records has resulted in a greater detection of smokers among women who gave birth in private and rural hospitals, given existing evidence that the data recording in these hospitals is less likely to be complete than in public or urban hospitals. 17,52 Comparing the two enhanced algorithms, it was found that additional information from antenatal admissions provided little enhanced benefit.…”

Section: Discussionmentioning

confidence: 99%

“…20,21 Underreporting of smoking status, however, may bias the findings of research relying on a single source of routine data. [22][23][24][25][26] Studies conducted in Australia and elsewhere using biochemical testing to validate self-reporting of smoking status have reported that between 6% and 39% of smoking women do not disclose their smoking status. [27][28][29][30][31] Greater levels of non-disclosure are found in women who are older, married and have higher socioeconomic status.…”

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confidence: 99%

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Linking birth records to hospital admission records enhances the identification of women who smoke during pregnancy

Tran

Roberts

Havard

et al. 2014

Australian and New Zealand Journal of Public Health

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Objective: Birth records and hospital admission records are valuable for research on maternal smoking, but individually are known to under-estimate smokers. This study investigated the extent to which combining data from these records enhances the identification of pregnant smokers, and whether this affects research findings such as estimates of maternal smoking prevalence and risk of adverse pregnancy outcomes associated with smoking. Methods:A total of 846,039 birth records in New South Wales, Australia, (2001Australia, ( -2010 were linked to hospital admission records (delivery and antenatal). Algorithm 1 combined data from birth and delivery admission records, whereas algorithm 2 combined data from birth record, delivery and antenatal admission records. Associations between smoking and placental abruption, preterm birth, stillbirth, and low birthweight were assessed using multivariable logistic regression.Results: Algorithm 1 identified 127,612 smokers (smoking prevalence 15.1%), which was a 9.6% and 54.6% increase over the unenhanced identification from birth records alone (prevalence 13.8%), and delivery admission records alone (prevalence 9.8%), respectively. Algorithm 2 identified a further 2,408 smokers from antenatal admission records. The enhancement varied by maternal socio-demographic characteristics (age, marital status, country of birth, socioeconomic status); obstetric factors (multi-fetal pregnancy, diabetes, hypertension); and maternity hospital. Enhanced and unenhanced identification methods yielded similar odds ratios for placental abruption, preterm birth, stillbirth and low birthweight. Conclusions:Use of linked data improved the identification of pregnant smokers. Studies relying on a single data source should adjust for the under-ascertainment of smokers among certain obstetric populations.

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“…10 Likewise, Land et al (2014) examined predictors of smoking status under-reporting during pregnancy and used a predictive model integrating socio-demographic correlates to produce more accurate smoking prevalence estimates among pregnant women (in their case, under-reporting lowered self-report estimates by values ranging from 1.1 to 1.9 percentage points). 15 …”

Section: Discussionmentioning

confidence: 99%

Estimation of smoking prevalence in Canada: Implications of survey characteristics in the CCHS and CTUMS/CTADS

Gagné

2017

Can J Public Health

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One of the main enterprises associated with tobacco control is surveillance, that is, to measure and follow over time the extent of smoking among the Canadian population. While surveillance systems have been in place for more than 50 years, knowing the exact prevalence of smoking in Canada continues to be a complex matter and understanding its estimation requires a critical appreciation of our national surveys' idiosyncrasies. This commentary describes the two Statistics Canada surveys that are most commonly used to examine smoking prevalence in this country: the Canadian Community Health Survey (CCHS) and the Canadian Tobacco, Alcohol and Drugs Survey (CTADS). It compares estimates of smoking prevalence obtained from each source and examines potential reasons for their noticeable discrepancies. Canadian researchers interested in smoking prevalence should be aware of current and future limitations, and should discuss and analyze these accordingly.KEY WORDS: Canada; surveys and questionnaires; epidemiology; smoking La traduction du résumé se trouve à la fin de l'article.

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Who Underreports Smoking on Birth Records: A Monte Carlo Predictive Model with Validation

Cited by 24 publications

References 19 publications

Abdominal Wall Defects Among Mexican American Infants: The Effect of Maternal Nativity

Abdominal Wall Defects Among Mexican American Infants: The Effect of Maternal Nativity

Linking birth records to hospital admission records enhances the identification of women who smoke during pregnancy

Estimation of smoking prevalence in Canada: Implications of survey characteristics in the CCHS and CTUMS/CTADS

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