Trial reportBMJ (Clinical research ed.)1999
Advising parents of asthmatic children on passive smoking: randomised controlled trial.
Trial report in BMJ (Clinical research ed.), 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
32 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Family and carer smoking control programmes for reducing children's exposure to environmental tobacco smoke.The Cochrane database of systematic reviews · 2018Pooled it
- Effectiveness of Interventions to Reduce Tobacco Smoke Pollution in Homes: A Systematic Review and Meta-Analysis.International journal of environmental research and public health · 2015Pooled it
- Interventions for educating children who are at risk of asthma-related emergency department attendance.The Cochrane database of systematic reviews · 2009Pooled it
- Prevention strategies for asthma--secondary prevention.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2005Guideline
- Changing Exposure Perceptions: A Randomized Controlled Trial of an Intervention with Smoking Parents.International journal of environmental research and public health · 2020Trial
- Motivational interviewing and urine cotinine feedback to stop passive smoke exposure in children predisposed to asthma: a randomised controlled trial.Scientific reports · 2017Trial
- Can a minimal intervention reduce secondhand smoke exposure among children with asthma from low income minority families? Results of a randomized trial.Journal of immigrant and minority health · 2014Trial
- A motivational interviewing intervention to PREvent PAssive Smoke Exposure (PREPASE) in children with a high risk of asthma: design of a randomised controlled trial.BMC public health · 2013Trial
- Effects of HEPA air cleaners on unscheduled asthma visits and asthma symptoms for children exposed to secondhand tobacco smoke.Pediatrics · 2011Trial
- Parent quit attempts after counseling to reduce children's secondhand smoke exposure and promote cessation: main and moderating relationships.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2009Trial
- Counseling to reduce children's secondhand smoke exposure and help parents quit smoking: a controlled trial.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2009Trial
- Trial
- Impact of advice to quit smoking on rating of care and anticipation of stigma in primary care.Primary health care research & development · 2025Article
- The role of nutrition in asthma prevention and treatment.Nutrition reviews · 2020Review
- Comparison of Liquid Chromatography Mass Spectrometry and Enzyme-Linked Immunosorbent Assay Methods to Measure Salivary Cotinine Levels in Ill Children.International journal of environmental research and public health · 2020Article
- Promoting Smoke-Free Homes Through Biomarker Feedback Documenting Child Exposure to Tobacco Toxins: Protocol for a Randomized Clinical Trial.JMIR research protocols · 2019Article
- Recruiting families for an intervention study to prevent second-hand smoke exposure in children.BMC pediatrics · 2018Article
- Prevalence of Parental Smoking and Predictors of Cessation: A Study in the South Carolina Pediatric Practice Research Network.Clinical pediatrics · 2015Article
- Treatment development and feasibility study of family-focused treatment for adolescents with bipolar disorder and comorbid substance use disorders.Journal of psychiatric practice · 2014Article
- Predictors of non-participation in a randomized intervention trial to reduce environmental tobacco smoke (ETS) exposure in pediatric cancer patients.Pediatric blood & cancer · 2009Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
objectiveTo investigate whether parents of asthmatic children would stop smoking or alter their smoking habits to protect their children from environmental tobacco smoke.
designRandomised controlled trial.
settingTayside and Fife, Scotland.
participants501 families with an asthmatic child aged 2-12 years living with a parent who smoked.
interventionParents were told about the impact of passive smoking on asthma and were advised to stop smoking or change their smoking habits to protect their child's health.
main outcome measuresSalivary cotinine concentrations in children, and changes in reported smoking habits of the parents 1 year after the intervention.
resultsAt the second visit, about 1 year after the baseline visit, a small decrease in salivary cotinine concentrations was found in both groups of children: the mean decrease in the intervention group (0.70 ng/ml) was slightly smaller than that of the control group (0.88 ng/ml), but the net difference of 0.19 ng/ml had a wide 95% confidence interval (-0.86 to 0.48). Overall, 98% of parents in both groups still smoked at follow up. However, there was a non-significant tendency for parents in the intervention group to report smoking more at follow up and to having a reduced desire to stop smoking.
conclusionsA brief intervention to advise parents of asthmatic children about the risks from passive smoking was ineffective in reducing their children's exposure to environmental tobacco smoke. The intervention may have made some parents less inclined to stop smoking. If a clinician believes that a child's health is being affected by parental smoking, the parent's smoking needs to be addressed as a separate issue from the child's health.
Indexed as
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.