Household overcrowding and psychological distress among Nunavik Inuit adolescents: a longitudinal study

Assessment of post-traumatic stress disorder and well-being among Sudanese during the ongoing war: a cross-sectional study

BACKGROUND

Wars profoundly impact mental health with growing long lasting consequences. This study assessed the prevalence of post-traumatic stress disorder (PTSD) and well-being among Sudanese affected by the ongoing conflict, with a specific focus on healthcare workers (HCWs).

METHODS

A cross-sectional study was conducted between April 1 and June 30, 2024, using the validated Arabic versions of PTSD Checklist for the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) (PCL-5) and the World Health Organization (WHO)-5 Well-Being Index.

RESULTS

A total of 1022 participants were included, and 44% were recruitted through online questionnaire and face-to-face interviews. Their mean age was 31.4 ± 12.5 years, 63.4% were females, 16.3% were HCWs and 83.3% were displaced due to conflict. The mean score of PTSD was 35 ± 21.3 with 56.9% having PTSD. The mean well-being score was 55.0 ± 23.9 with 40% reporting poor well-being. Among HCWs, 60.5% suffered from PTSD and 27.5% experienced poor well-being. A significant negative correlation was observed between PTSD and well-being scores (r=-0.273, p < 0.001). Predictors of PTSD were being male [β = -10.91, 95% confidence interval (CI) (-13.44, -8.38); p < 0.001], urban area resident [β = -10.38, 95%CI (-18.78, -1.98); p = 0.016], non-medical profession [β = 5.07, 95%CI (1.46, 8.67); p = 0.006], living with 2 to 10 households [β = 6.69, 95%CI (0.46, 12.91); p = 0.035], living with more than 20 households [β = 13.20, 95%CI (4.17, 22.23); p = 0.004], insufficient income [β = 4.32, 95% CI (1.84,6.81); p = 0.001], living in conflict zones [β = 13.38 95%CI (8.83,17.92); p < 0.001], refugee resettlement [β = 13.18, 95%CI (9.98,16.38); p < 0.001], and well-being score [β = -0.20, 95%CI (-0.25, -0.15); p < 0.001]. Predictors of well-being scores were living with more than 20 households [β = -17.44, 95%CI (-28.83, -6.04); p = 0.003], being a HCW [β =-6.22, 95%CI (-11.87, -0.57); p = 0.031], being a student [β = -7.55, 95%CI (-12.94, -2.16), p = 0.006, insufficient income [β = -5.04, 95%CI (-8.17, -1.90); p = 0.002], and living in conflict zones [β = -8.22, 95%CI (-13.96, -2.48); p = 0.005].

CONCLUSIONS

The study highlights an alarmingly high prevalence of PTSD among Sudanese including HCWs, with significant mental health consequences. These findings emphasize the urgent need for mental health interventions and humanitarian support to mitigate the psychological challenges faced by the conflict affected population.

A Scoping Review of the Current Knowledge of the Social Determinants of Health and Infectious Diseases (Specifically COVID-19, Tuberculosis, and H1N1 Influenza) in Canadian Arctic Indigenous Communities

Social determinants of health (SDHs) and the impact of colonization can make Canadian Arctic Indigenous communities susceptible to infectious diseases, including the coronavirus disease 2019 (COVID-19). This scoping review followed the PRISMA guidelines for scoping reviews and studied what is known about selected pandemics (COVID-19, tuberculosis, and H1N1 influenza) and SDHs (healthcare accessibility, food insecurity, mental health, cultural continuity, housing, community infrastructure, and socioeconomic status (SES)) for Canadian Arctic Indigenous communities. Original studies published in English and French up to October 2024 were located in databases (PubMed, Medline, and CINAHL), AlterNative: An International Journal of Indigenous Peoples, and through reference tracking. We included 118 studies: 6 relating to COVID-19, 5 to influenza, 5 to TB, 27 to food insecurity, 26 to healthcare access, 22 to mental health, 9 to SES, 8 to housing, 7 to cultural continuity, and 3 to community infrastructure. SDHs affecting Indigenous individuals include food insecurity, limited healthcare access, mental health challenges, low SES, suboptimal housing, and limited cultural continuity. These findings are relevant to other Arctic regions. It is crucial to understand how SDHs impact the health of Arctic communities and to utilize this information to inform policy and practice decisions for pandemic prevention, management, and treatment. Many SDHs pose challenges for preventing and managing infectious diseases.

Domestic access to water in a decentralized truck-to-cistern system: a case study in the Northern Village of Kangiqsualujjuaq, Nunavik (Canada)

Municipal water supply through truck-to-cistern systems is common in northern Canada. Household satisfaction and concerns about water services likely impact user preferences and practices. This case study explores household perspectives and challenges with regard to domestic access to water in a decentralized truck-to-cistern system. A case study was conducted in the Northern Village of Kangiqsualujjuaq, Nunavik (Quebec, Canada). A paper-based questionnaire was completed by 65 households (one quarter of the population). Many households (37%) reported not drinking tap water from the truck-to-cistern system. Chlorine taste was a frequently reported concern, with those households being significantly less likely to drink water directly from the tap (p = 0.002). Similarly, households that reported a water shortage in the previous week (i.e., no water from the tap at least once) (33%) were more likely to express dissatisfaction with delivered water quantity (rs = 0.395, p = 0.004). Interestingly, 77% of households preferred using alternative drinking water sources for drinking purposes, such as public tap at the water treatment plant, natural sources or bottled water. The study underscores the importance of considering household perspectives to mitigate the risks associated with service disruptions and the use of alternative sources for drinking purposes.

The psychosocial dimension of housing in Nunavik: does social support vary with household crowding?

OBJECTIVES

Studies show that living in overcrowded households can contribute to the erosion of social support, which is an important factor in health and well-being. In this study, we examine the relationship between household crowding and social support for Inuit living in Nunavik (hereafter referred to as Nunavimmiut), a region where housing shortages are considered a serious public health problem. We assess whether overcrowding is associated with lower levels of perceived social support and whether this association varies by gender and age group.

METHODS

Cross-sectional data are from Qanuilirpitaa? the 2017 Nunavik Health Survey (N = 1306; aged 16 years and older). A perceived social support index was derived from answers to questions related to three different components of social support: positive interaction, emotional support, and love and affection. Associations between overcrowding (more than one person per room) and perceived social support were assessed using weighted linear and logistic regressions, adjusted for several factors. Sex- and age-stratified analyses were also conducted.

RESULTS

Nunavimmiut report significantly lower levels of social support when living in overcrowded households, independently of other covariates. Analyses stratified by sex and age further show that the detrimental association between overcrowding and perceived social support is higher and stronger for men and older adults (both men and women 55 years and older).

CONCLUSION

Overcrowding is associated with lower levels of perceived social support, which is a key component of health for the general population and for Nunavimmiut. Future research should examine the factors creating stronger associations between overcrowding and lower social support for men and older adults.

Low Emotional Intelligence: A Precursor of Mental Health Derangements Among Adolescents

INTRODUCTION

Emotional intelligence (EI) is the most researched psychological construct in the 21st century. It predicts success and happiness in life and is suggested as a predictor of mental health (MH). We aimed to assess whether low EI among adolescents acts as a precursor of their MH derangements.

MATERIALS AND METHODS

A cross-sectional study was carried out in Pune Municipal Corporation in 2021 with all due approvals, consent, and assent. EI and MH of adolescents studying in Xth standard in randomly selected 24 out of 440 secondary schools were assessed by Schutte's Emotional Intelligence Test (SET) and Depression, Anxiety, and Stress Scale 42 (DASS-42) with collection of socio-demographic information. The presence of symptoms of mild to extremely severe depression, anxiety, and stress was considered as MH derangement. All research instruments were translated into the local language, pre-tested, and validated before use. Class teachers were trained for data collection. Data were imported to SPSS version 20 (IBM Corp., Armonk, NY) data editor for further analysis. After enlisting frequencies and proportions, associations and correlations were tested by the chi-squared test and Spearman correlation coefficient, respectively.

RESULTS

A total of 622 participants submitted all research instruments. The mean age was 14.74 (+0.742) years. Boys and girls were 38% and 62%, respectively. The majority were Hindus, belonging to socio-economic classes II and III, residing in urban areas. Symptoms of severe to extremely severe depression and anxiety, but not stress, were associated with low EI (p < 0.0001, 0.001, and 0.229). Also, the EI score had a negative correlation with the depression score (ρ = -0.221, p < 0.0001) and anxiety score (ρ = -0.152, p = 0.001), but not with the stress score.

CONCLUSION

Low EI can be taken as a precursor of MH derangements, especially in the form of depression and anxiety among school-going adolescents.

RECOMMENDATIONS

Efforts to improve EI among adolescents will help to decrease MH derangements, subsequent MH disorders, and suicidality, with improvement in academic performance.

Overcrowded housing during adolescence and future risk of premature mortality: a 28-year follow-up of 556,191 adolescents from Switzerland

Background

Few large-scale studies have examined the health impacts of overcrowded housing in European countries. The aim of this study was to assess whether household crowding during adolescence increases the risk of all-cause and cause-specific mortality in Switzerland.

Methods

Study participants were 556,191 adolescents aged 10-19 years at the 1990 census from the Swiss National Cohort. Household crowding at baseline was measured as the ratio between the number of persons living in the household and the number of available rooms, categorized as none (ratio ≤ 1), moderate (1 < ratio ≤ 1.5), and severe (ratio > 1.5). Participants were linked to administrative mortality records through 2018 and followed for premature mortality from all causes, cardiometabolic disease and self-harm or substance use. Cumulative risk differences between ages 10 and 45 were standardized by parental occupation, residential area, permit status and household type.

Findings

Of the sample, 19% lived in moderately and 5% lived in severely crowded households. During an average follow-up of 23 years, 9766 participants died. Cumulative risk of death from all causes was 2359 (95% compatibility intervals: 2296-2415) per 100,000 persons when living in non-crowded households. Living in moderately crowded households led to 99 additional deaths (-63 to 256) per 100,000 persons and living in severely crowded households 258 additional deaths (-37 to 607) per 100,000 persons. The effect of crowding on mortality from cardiometabolic diseases, self-harm or substance use was negligible.

Interpretation

Excess risk of premature mortality in adolescents living in overcrowded households appears to be small or negligible in Switzerland.

Funding

University of Fribourg Scholarship Programme for foreign post-doctoral researchers.

Housing as a determinant of Inuit mental health: associations between improved housing measures and decline in psychological distress after rehousing in Nunavut and Nunavik

INTERVENTION

In 2014-2015, more than 400 public housing units were constructed in Nunavut and Nunavik, two of the four Inuit regions in Canada. This provided the opportunity to assess the impact of improved housing conditions from a population health perspective in 12 Inuit communities where housing needs were the most severe. The aim of the research is to examine the associations between changes in housing conditions and changes in psychological distress pre-post rehousing.

METHODS

A pre-post uncontrolled study was conducted in collaboration with Nunavut- and Nunavik-based organizations. Applicants at the top of public housing waitlists were recruited by local housing officers; participants completed questionnaires 1-6 months before rehousing, and 15-18 months after. Change in psychological distress was measured with the Kessler 6-item scale. Changes in three housing measures were examined: number of adults per household, number of children per household, and sense of home score. For each housing measure, a categorical variable stratified participants into three categories. The reference category included participants reporting significant change in the concerned housing measure; the two other categories included participants reporting little or no change. Associations were tested with linear multilevel regression models for change.

RESULTS

A total of 102 Inuit adults completed the study. A reduction in the number of adults per household (living with 2 adults or less after rehousing) and an increase in sense of home were associated with significant decline in psychological distress pre-post rehousing (p < 0.001).

CONCLUSION

Increased investments leading to such improvements in housing circumstances are promising ways to promote mental health in Inuit regions.

Is cyberbullying perpetration associated with anxiety, depression and suicidal ideation among lebanese adolescents? Results from a cross-sectional study

BACKGROUND

As cyberbullying is a new area of investigation, results worldwide point to the prevalence of cyberbullying perpetration. This study aimed to assess the association between cyberbullying perpetration, anxiety, depression and suicidal ideation among Lebanese adolescents.

METHODS

This cross-sectional study was conducted between May and June 2021 and included a sample of adolescents aged between 13 and 16 years old, recruited from private schools chosen in a convenient way from all Lebanese districts. A total of 520 students accepted to participate in our study. To collect data, a questionnaire was shared by google form including: Cyber Bully/Cyber victim questionnaire; Lebanese Anxiety Scale; and Patient Health Questionnaire for Adolescents.

RESULTS

The results of the linear regressions, taking anxiety and depression as dependent variables, showed that female gender, having kind of hard and very/extremely hard influence of problems on daily work, sexual cyberbullying in cyberspace, embarrassing and inserting malicious content in cyberspace and older age were significantly associated with more anxiety and depression. Having kind of hard influence of problems on daily work compared to not at all, higher anxiety, higher depression and higher household crowding index (lower socioeconomic status) were significantly associated with higher odds of having suicidal ideation in the last month.

CONCLUSION

Cyberbullying perpetration and its associated factors reported in this study are significant enough to call for early detection and prevention strategies for Lebanese adolescents. At the school level, effective programs implemented in the school years are needed, aiming to develop social/emotional control, and conflict resolution skills as they might decrease engagement in cyberbullying perpetration among adolescents. Preventive interventions are needed to reduce the engagement of Lebanese adolescents in cyberbullying perpetration.

Family environment characteristics and sleep duration in children: Maternal mental health as a mediator

BACKGROUND

Family environment is a key factor affecting children's health. However, little is known about whether and how the family environment affects sleep duration in children. This study investigated the effects of both physical and social characteristics of the family environment on sleep duration in children and determined whether these associations were mediated by maternal mental health.

METHODS

Data were obtained from the Taiwan Birth Cohort Study. A total of 19,400 children who completed 6-month, 18-month, 3-year, 5.5-year, and 8-year surveys were analyzed. The physical family environment characteristics were household crowding and housing quality. Family functioning was used as an indicator of family social environment. Multiple linear regression and path analysis were performed to test the hypotheses.

RESULTS

The children living in crowded households had shorter sleep durations (β = -0.03, p < .001). Superior housing quality and family functioning were associated with longer sleep durations (β = 0.04 and 0.02, respectively, ps < .01). The effects of housing quality and family functioning on sleep duration were mediated by maternal mental health.

CONCLUSIONS

Both physical and social characteristics of the family environment are critical to sleep duration in children. The effects of family environment characteristics on sleep duration in children are in part mediated by maternal mental health. Interventions to improve sleep during childhood by targeting the family environment may be more effective when maternal mental health is considered.

Mapping local variation in household overcrowding across Africa from 2000 to 2018: a modelling study

BACKGROUND

Household overcrowding is a serious public health threat associated with high morbidity and mortality. Rapid population growth and urbanisation contribute to overcrowding and poor sanitation in low-income and middle- income countries, and are risk factors for the spread of infectious diseases, including COVID-19, and antimicrobial resistance. Many countries do not have adequate surveillance capacity to monitor household overcrowding. Geostatistical models are therefore useful tools for estimating household overcrowding. In this study, we aimed to estimate household overcrowding in Africa between 2000 and 2018 by combining available household survey data, population censuses, and other country-specific household surveys within a geostatistical framework.

METHODS

We used data from household surveys and population censuses to generate a Bayesian geostatistical model of household overcrowding in Africa for the 19-year period between 2000 and 2018. Additional sociodemographic and health-related covariates informed the model, which covered 54 African countries.

FINDINGS

We analysed 287 surveys and population censuses, covering 78 695 991 households. Spatial and temporal variability arose in household overcrowding estimates over time. In 2018, the highest overcrowding estimates were observed in the Horn of Africa region (median proportion 62% [IQR 57-63]); the lowest regional median proportion was estimated for the north of Africa region (16% [14-19]). Overall, 474·4 million (95% uncertainty interval [UI] 250·1 million-740·7 million) people were estimated to be living in overcrowded conditions in Africa in 2018, a 62·7% increase from the estimated 291·5 million (180·8 million-417·3 million) people who lived in overcrowded conditions in the year 2000. 48·5% (229·9 million) of people living in overcrowded conditions came from six African countries (Nigeria, Ethiopia, Democratic Republic of the Congo, Sudan, Uganda, and Kenya), with a combined population of 538·3 million people.

INTERPRETATION

This study incorporated survey and population censuses data and used geostatistical modelling to estimate continent-wide overcrowding over a 19-year period. Our analysis identified countries and areas with high numbers of people living in overcrowded conditions, thereby providing a benchmark for policy planning and the implementation of interventions such as in infectious disease control.

FUNDING

UK Department of Health and Social Care, Wellcome Trust, Bill & Melinda Gates Foundation.

Poverty, noncommunicable diseases, and perceived health risks among older adults during the COVID-19 pandemic in urban Thailand

The COVID-19 pandemic has had negative impacts on vulnerable populations worldwide. This study aimed to examine the association between the health worries of urban older people in Thailand and covariates related to income and non-income poverty, noncommunicable diseases (NCDs), and metabolic risk factors (MRFs). The study utilized the 2021 Survey on Housing and Support Services for Poor Older Adults, which sampled lower-income urban adults aged at least 55 years from five national regions. Bivariate analyses were performed to determine the relationships of NCDs and MRFs with the covariates. Then, binary logistic regression was used to analyze outcomes of perceived health risks including becoming infected with COVID-19, declining health status, and being unable to access health care. Higher educational attainment and income levels were observed to be negatively correlated with worse health status and the inability to access health care. Subjective household crowding consistently had a positive association with the three health concerns. Having MRFs was related only to concerns about health status and access to health care during the pandemic. Welfare and health policies need to improve their responsiveness to the needs of the older population, especially for protection from socioeconomic shocks such as those seen with the current pandemic.

"We're Home Now": How a Rehousing Intervention Shapes the Mental Well-Being of Inuit Adults in Nunavut, Canada

This study explores the ways in which a rehousing intervention shapes the mental well-being of Inuit adults living in Nunavut, Canada, where the prevalence of core housing need is four times the national average. More specifically, it compares the housing experiences of participants who were rehoused in a newly built public housing unit, to the experiences of participants on the public housing waitlist. The study was developed in collaboration with organizations based in Nunavut and Nunavik. Semi-structured interviews were transcribed, and a deductive-inductive thematic analysis was performed based on Gidden's concept of ontological security, and Inuit-specific mental health conceptualization. Twenty-five Inuit adults participated (11 rehoused, 14 waitlist). Three themes were identified to describe how the subjective housing experiences of participants improved their mental well-being after rehousing: (1) refuge creation; (2) self-determination and increased control; (3) improved family dynamics and identity repair. Implicit to these themes are the contrasting housing experiences of participants on the waitlist. Construction initiatives that increase public housing stock and address gaps in the housing continuum across Inuit regions could promote well-being at a population level. However, larger socio-economic problems facing Inuit may hamper beneficial processes stemming from such interventions.

Gender-based inequalities in the effects of housing on health: A critical review

Gender and its power relations are produced and reproduced in the housing sphere, leading to inequalities in living conditions and, therefore, in gender inequalities in health outcomes. The aim of the study is to review the published literature on gender, housing and health, to critically evaluate the incorporation of the gender perspective, and to incorporate this perspective into the conceptual framework of housing and health. Using the critical review method, we conducted a literature review in MEDLINE, Scopus, WOS and Redalyc, without restriction of publication date, including studies published up to October 2020. We analyzed the gender perspective in health research using the Gender Perspective in Health Research Questionnaire and described the results according to main housing dimensions. Of the 20,988 articles identified, we selected 90 for full-text analysis, of which 18 were included in the feminist research category, 27 in gender-sensitive, 31 in sex difference and 14 did not include any gender perspective. Regarding the association between housing and health, most studies analyzed affordability (36%) and physical conditions (32%), and trends in health outcomes by gender varied according to each exposure analyzed, although overall the effects were worse for women and non-binary or trans people. To date, very few studies consider the gender perspective. It is urgent to address gender relations in housing and health studies, and to open an interdisciplinary and intersectoral agenda to address this complex relationship.

Psychological Distress and Signs of Post-Traumatic Stress in Response to the COVID-19 Health Emergency in a Mexican Sample

OBJECTIVE

This study aimed to evaluate the psychological impacts of COVID-19 prevention measures, such as social isolation, on a Mexican sample.

METHODS

We conducted an online sociodemographic and Impact of Event Scale-Revised (IES-R) survey during the second phase of the COVID-19 outbreak in Mexico to evaluate the presence of psychological distress, signs of post-traumatic stress, and to identify the groups at highest risk in the sample.

RESULTS

Prevalence of psychological distress at moderate or severe levels in the sample were as follows: 943 (22%) intrusive thoughts, 933 (22.3%) avoidance, and 515 (12.2%) hyperarousal. Furthermore, we found the symptoms of clinically significant post-traumatic stress in 1160 (27.7%) of the participants. The variables positively correlated with higher psychological distress were as follows: age (younger), sex (female), employment (employed), relationship status (single), in social isolation, number of days in isolation, the number of people in the household (3-5), and a perception of a high risk of contracting COVID-19, change in routine, engaging in less activity, and loss of income.

CONCLUSION

During phase 2 of the COVID-19 outbreak in Mexico, we observed the presence of psychological distress and post-traumatic stress symptoms in over a quarter of the population. This investigation may guide mental health interventions and policies towards the groups that are most vulnerable to the impacts of the social and lifestyle changes taking place in Mexico due to COVID-19.

The effect of household crowding and composition on health in an Inuit cohort in Greenland

Aims: This study aims to investigate the association between household crowding and household composition and self-rated health and mental health (GHQ scale) among the Inuit in Greenland. Poor housing conditions are a concern in Greenland, especially in the villages, where socioeconomic standards in general are lower. Methods: A cohort of 1282 adults participated in two population-based surveys in Greenland, the Inuit Health in Transition survey 2005–2010 (baseline) and The Health Survey in Greenland 2014 (follow-up). Associations between household conditions at baseline and health outcomes at follow-up (poor self-rated health and mental health measured by the GHQ scale) were examined using logistic regression models, adjusting for covariates at baseline. Results: Participants living in an overcrowded dwelling (more than one person per room) at baseline were more likely to report poor self-rated health at follow-up (OR 1.47; 95% CI 1.09; 1.99) compared with those not living in an overcrowded dwelling. In addition, participants who lived alone at baseline were more likely (OR 1.98; 95% CI 1.09; 3.58) to experience poor mental health at follow-up compared with those who lived with children. Conclusions: Results indicate that household conditions are related to health in Greenland. Public health authorities should work to ensure affordable housing of good quality in all communities.

Relocating to a new or pre-existing social housing unit: significant health improvements for Inuit adults in Nunavik and Nunavut

OBJECTIVES

In 2014-2015, over 400 social housing units were constructed in selected communities in Nunavik and Nunavut, two Inuit regions in northern Canada where housing shortages and poor quality housing are endemic and undermine population health. This paper presents results from a before-and-after study examining the effects of rehousing, i.e., relocating to a newly constructed or pre-existing social housing unit, on psychosocial health and asthma-related symptoms for Inuit adults.

METHODS

Baseline data were collected 1-6 months before, and follow-up data 15-18 months after rehousing. Of the 289 participants at baseline, 186 were rehoused. Of the 169 participants eligible at follow-up, 102 completed the study. Self-reported health measures included psychological distress, perceived stress in daily life, perceived control over one's life, and asthma-related symptoms. Data are analyzed using multilevel models for longitudinal data.

RESULTS

After adjusting for age, sex, and region of residence, participants reported significantly lower levels of psychological distress and perceived stress in daily life, and improved sense of control over their lives 15 to 18 months after rehousing. Participants were also significantly less likely to report asthma-related symptoms at follow-up.

CONCLUSION

Significant positive health impacts are observed for adults who relocated to newly constructed or pre-existing social housing units. Increasing investments to redress the housing situation across Inuit Nunangat is required, not only to improve living conditions but also to improve the health and well-being of the population.

Association between neighbourhood socioeconomic features and residential fire incidence, related casualties and children: a cross-sectional population-based study in 4 Canadian provinces

BACKGROUND

This study assessed whether socioeconomic factors affect the rates of residential fire incidence and fire-related injuries and deaths, and whether children are affected differently than the general population.

METHODS

We employed a cross-sectional study design using data for British Columbia, Alberta, Manitoba and Ontario from the National Fire Information Database, which includes fire incidents and losses reported by provincial fire marshals across Canada between 2005 and 2015. It also contains 2011 census subdivision social domain data from Statistics Canada based on fire location. Multivariable negative binomial regressions tested the significance of relations between census subdivision socioeconomic factors (average household size, educational attainment, median income and unemployment rate) and the rates of residential fires and casualties per person-year, and casualties per fire incident.

RESULTS

Census subdivisions with higher educational attainment and unemployment rates had higher rates of residential fires (incidence rate ratio [IRR] 1.07, 95% confidence interval [CI] 1.05-1.10, and IRR 1.24, 95% CI 1.18-1.31, respectively) and of residential fire casualties per person-year (IRR 1.09, 95% CI 1.05-1.13, and IRR 1.29, 95% CI 1.20-1.40, respectively). Census subdivisions with smaller average households had higher rates of residential fire casualties per person-year (IRR 0.43, 95% CI 0.22-0.83) and per fire incident (IRR 0.75, 95% CI 0.58-0.97), and the association was even stronger for children (IRR 0.17, 95% CI 0.08-0.36, and IRR 0.41, 95% CI 0.20-0.86, respectively).

INTERPRETATION

The results suggest that efforts to prevent residential fires should be prioritized in neighbourhoods with higher educational attainment and unemployment, whereas house fire safety programs should be intensified in neighbourhoods with smaller households to prevent fire casualties, especially among children, once a fire does occur.