Geographic proximity is associated with transmission of suicidal behaviour among siblings.

Geographic proximity is associated with transmission of suicidal behaviour among siblings.
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地理位置的接近与兄弟姐妹之间自杀行为的传播有关。

DOI:
10.1111/acps.13040
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发表时间:
2019
影响因子:
6.7
通讯作者:
Kendler,KS
Kendler,KS
中科院分区:
医学1区
文献类型:
--
作者:
Edwards,AC;Ohlsson,H;Mościcki,EK;Sundquist,J;Sundquist,K;Kendler,KS

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本研究的目的是澄清的作用,“传染”,或社会传播,在自杀行为(SB)之间siblings.MethodsWe的风险,瑞典同胞对,直到其中之一(S1;N= 111,848)被登记为自杀企图或完成。我们测试了兄弟姐妹之间的地理邻近性对S1兄弟姐妹(S2)首次SB登记风险的影响。为了控制家族混杂因素,我们对兄弟姐妹三人组(N= 701)进行了补充分析,比较了不同兄弟姐妹的风险,作为其各自与S1的接近程度的函数。结果兄弟姐妹间的最佳拟合模型包括兄弟姐妹之间距离的影响(HR = 0.96,95%CI = 0.93-0.99)。危险率在25公里以内迅速下降,在150公里以外基本稳定。在所有配对中,兄弟姐妹之间较大的年龄差异与SB风险降低相关(HR = 0.96 95%CI = 0.93-0.98)。结果是一致的兄弟姐妹trios. ConclusionsConsistentsConsistently与自杀传染的概念,自杀行为的风险后,兄弟姐妹的自杀完成或企图是更高的兄弟姐妹亲密的功能。这些发现对潜在的混淆家族因素是稳健的。
ObjectiveThe aim of this study was to clarify the role of ‘contagion’, or social transmission, in risk of suicidal behaviour (SB) among siblings.MethodsWe followed Swedish sibling pairs until one of them (S1;N= 111,848) was registered for a suicide attempt or completion. We tested the effect of geographic proximity between siblings on risk of a first SB registration of S1's sibling (S2). To control for familial confounding, we conducted complementary analyses of sibling trios (N= 701), comparing risk in different siblings as a function of their respective proximity to S1.ResultsThe best‐fitting model across sibling pairs included an effect of distance between siblings (HR = 0.96, 95% CI = 0.93–0.99). Hazard ratios declined quickly up to 25 km and largely stabilized beyond 150 km. Across all pairs, a larger age difference between siblings was associated with reduced SB risk (HR = 0.96 95% CI = 0.93–0.98). Findings were consistent within the sibling trios.ConclusionsConsistent with the concept of suicide contagion, risk of suicidal behaviour subsequent to a sibling's suicide completion or attempt is higher as a function of sibling closeness. These findings are robust to potentially confounding familial factors.
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