Climate vulnerability of Swedish newborns: Gender differences and time trends of temperature-related neonatal mortality, 1880–1950

Junkka, Johan; Karlsson, Lena; Lundevaller, Erling Häggström; Schumann, Barbara

doi:10.1016/j.envres.2020.110400

Cited by 9 publications

(24 citation statements)

References 29 publications

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“…The effect of gender on the relationship between mortality and temperatures was conflicting. Some researchers reported that males were more vulnerable than females to temperatures 60 – 62 , which was consistent with this study. Junkka et al reported that the OR of mortality at − 20 °C was 1.17 (0.88–1.54) among females, and 1.94 (1.53–2.45) among males 62 .…”

Section: Discussionsupporting

confidence: 92%

The effect of ambient temperature on in-hospital mortality: a study in Nanjing, China

Sheng

Tian

et al. 2022

Sci Rep

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To reduce the inpatient mortality and improve the quality of hospital management, we explore the relationship between temperatures and in-hospital mortality in a large sample across 10 years in Nanjing, Jiangsu. We collected 10 years’ data on patient deaths from a large research hospital. Distributed lag non-linear model (DLNM) was used to find the association between daily mean temperatures and in-hospital mortality. A total of 6160 in-hospital deaths were documented. Overall, peak RR appeared at 8 °C, with the range of 1 to 20 °C having a significantly high mortality risk. In the elderly (age ≥ 65 years), peak RR appeared at 5 °C, with range − 3 to 21 °C having a significantly high mortality risk. In males, peak RR appeared at 8 °C, with the range 0 to 24 °C having a significantly high mortality risk. Moderate cold (define as 2.5th percentile of daily mean temperatures to the MT), not extreme temperatures (≤ 2.5th percentile or ≥ 97.5th percentile of daily mean temperatures), increased the risk of death in hospital patients, especially in elderly and male in-hospital patients.

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Section: Discussionsupporting

confidence: 92%

The effect of ambient temperature on in-hospital mortality: a study in Nanjing, China

Sheng

Tian

et al. 2022

Sci Rep

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“…Surprisingly, during the extended winter season (October to March), no association of cold was found. As supported by our previous studies on climate vulnerability of the unborn, 20 , 36 , 37 the fetus seems more vulnerable to temperature during spring to autumn than during other seasons. Previously, we also found among settlers in the more remote inland during the 19th century that perinatal mortality risk in winter was not affected by either high or low temperature in the month preceding birth.…”

Section: Discussionsupporting

confidence: 71%

“…In contemporary studies, male fetuses have been shown to be more vulnerable to ambient heat than their female counterparts, 4 , 45 which is the case even for new-born boys, due to their overall developmental disadvantage resulting in higher risks of preterm birth and low birth weight. 36 …”

Section: Discussionmentioning

confidence: 99%

Ambient temperature and stillbirth risks in northern Sweden, 1880–1950

Karlsson

Junkka

Lundevaller

et al. 2021

Environmental Epidemiology

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“…In addition, a Swedish study indicated that temperature increases from 14.5 • C to 20 • C were associated with a 25% increase in neonatal mortality [67]. Furthermore, this association increased steeply with increased temperatures, resulting in an almost 50% higher risk at temperature greater than 24 • C [67]. In contrast, two studies found elevated temperature led to lower mortality in neonates [66,84].…”

Section: Neonatal Mortalitymentioning

confidence: 99%

“…This review included six studies examining the association between elevated temperature and neonatal mortality [34,66,67,77,84,86].Two studies found an association between elevated temperatures and an increased risk of neonatal mortality [34].For instance, a US study of 9070 neonates found that increased apparent temperature was associated with a 4.6% increased risk for all-cause mortality and a 27% increased risk for respiratory mortality among neonates [34]. In addition, a Swedish study indicated that temperature increases from 14.5 • C to 20 • C were associated with a 25% increase in neonatal mortality [67]. Furthermore, this association increased steeply with increased temperatures, resulting in an almost 50% higher risk at temperature greater than 24 • C [67].…”

Section: Neonatal Mortalitymentioning

confidence: 99%

Effect of Elevated Ambient Temperature on Maternal, Foetal, and Neonatal Outcomes: A Scoping Review

Dalugoda

Kuppa

Phung

et al. 2022

IJERPH

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This scoping review provides an overview of the published literature, identifies research gaps, and summarises the current evidence of the association between elevated ambient temperature exposure during pregnancy and adverse maternal, foetal, and neonatal outcomes. Following the PRISMA extension for scoping reviews reporting guidelines, a systematic search was conducted on CINAHL, PubMed, and Embase andincluded original articles published in the English language from 2015 to 2020 with no geographical limitations. A total of seventy-five studies were included, conducted across twenty-four countries, with a majority in the USA (n = 23) and China (n = 13). Study designs, temperature metrics, and exposure windows varied considerably across studies. Of the eighteenheat-associated adverse maternal, foetal, and neonatal outcomes identified, pre-term birth was the most common outcome (n = 30), followed by low birth weight (n = 11), stillbirth (n = 9), andgestational diabetes mellitus (n = 8). Overall, papers reported an increased risk with elevated temperature exposures. Less attention has been paid to relationships between heat and the diverse range of other adverse outcomes such as congenital anomalies and neonatal mortality. Further research on these less-reported outcomes is needed to improve understanding andthe effect size of these relationships with elevated temperatures, which we know will be exacerbated by climate change.

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Climate vulnerability of Swedish newborns: Gender differences and time trends of temperature-related neonatal mortality, 1880–1950

Cited by 9 publications

References 29 publications

The effect of ambient temperature on in-hospital mortality: a study in Nanjing, China

The effect of ambient temperature on in-hospital mortality: a study in Nanjing, China

Ambient temperature and stillbirth risks in northern Sweden, 1880–1950

Effect of Elevated Ambient Temperature on Maternal, Foetal, and Neonatal Outcomes: A Scoping Review

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