Safety of virtual reality use in children: a systematic review

The study aimed to systematically review available literature regarding the safety of virtual reality (VR) use via head-mounted display in children under 14 years of age. The study was a systematic review including all study designs. A search was conducted in January 2023 in PubMed and EMBASE using key terms referring to 'virtual reality', 'paediatrics' and 'safety'.  Following title and abstract and full-text screening, data were extracted and a narrative synthesis undertaken. Twenty-six studies met criteria for inclusion in the final review.  Limited data suggest that VR may cause mild cybersickness symptoms (not severe enough to cause participants to discontinue use of VR) and that for children with existing amblyopia using VR may result in double vision, which resolves on cessation of VR exposure.  Two randomised control trials did not report differences in adverse events between the intervention (VR use) and control groups. Reporting of safety data was poor; only two studies used a validated measure, and in the remaining studies, it was often unclear how adverse events were defined (if at all), how they were categorised in terms of severity and how they were recorded.     Conclusion: There is limited evidence regarding any potential harms from short exposure to VR in children under 14 years under supervision. Additional research is required to understand increases in cybersickness during and after VR exposure, and the impact of repeated exposure.  Adverse events need to be accurately and routinely recorded to determine any hitherto unknown safety concerns for children < 14 years using VR. What is Known: • Virtual reality (VR) is increasingly being applied in paediatrics, with benefits in terms of anxiety reduction, improved pain management associated with procedures, as an adjunct to physiotherapy and supporting treatments in autistic spectrum disorder.. • Safety guidance in relation to VR use, particularly in younger children, is limited. What is New: • A systematic review of available literature regarding the safety of VR use via head-mounted display in children under 14 years of age demonstrated limited evidence regarding any potential harms from short exposure to VR.. • Studies rarely report safety data and adverse side effects are poorly defined, measured and/or reported. • The lack of a validated measure for evaluating VR-associated symptoms in children compounds the challenging ethical issues of undertaking research into the effects of VR on younger children.

Brazil's more doctors programme and infant health outcomes: a longitudinal analysis

BACKGROUND

Providing sufficient numbers of human resources for health is essential for effective and accessible health services. Between 2013 and 2018, the Brazilian Ministry of Health implemented the Programa Mais Médicos (PMM) (More Doctors Programme) to increase the supply of primary care doctors in underserved areas of the country. This study investigated the association between PMM and infant health outcomes and assessed if heterogeneity in the impact of PMM varied by municipal socio-economic factors and health indicators.

METHODS

An ecological longitudinal (panel) study design was employed to analyse data from 5565 Brazilian municipalities over a 12-year period between 2007 and 2018. A differences-in-differences approach was implemented using longitudinal fixed effect regression models to compare infant health outcomes in municipalities receiving a PMM doctor with those that did not receive a PMM doctor. The impact of PMM was assessed on aggregate and in municipality subgroups.

RESULTS

On aggregate, the PMM was not significantly associated with changes in infant or neonatal mortality, but the PMM was associated with reductions in infant mortality rate (IMR) (of - 0.21; 95% CI: - 0.38, - 0.03) in municipalities with highest IMR prior to the programme's implementation (where (IMR) > 25.2 infant deaths per 1000 live births). The PMM was also associated with an increase in the proportion of expectant mothers receiving seven or more prenatal care visits but only in municipalities with a lower IMR at baseline and high density of non-PMM doctors and community health workers before the PMM.

CONCLUSIONS

The PMM was associated with reduced infant mortality in municipalities with the highest infant mortality rate prior to the programme. This suggests effectiveness of the PMM was limited only to the areas of greatest need. New programmes to improve the equitable provision of human resources for health should employ comprehensive targeting approaches balancing health needs and socio-economic factors to maximize effectiveness.