A comparison and analysis of seven gun law permissiveness scales.
A comparison and analysis of seven gun law permissiveness scales.
复制标题
DOI：
10.1186/s40621-020-00296-5
复制
发表时间：
2021-01-18
影响因子：
2.2
通讯作者：
Branas CC
中科院分区：
文献类型：
--
作者：
Reeping PM;Morrison CN;Rudolph KE;Goyal MK;Branas CC
由于枪支法许可范围的创建方式不同，以及对各种范围的政治动机基础的猜测，人们对其可靠性提出了质疑。我们比较了七个枪支法许可规模，不同的类型和来源，在何种程度上的枪支法许可规模的选择可能会影响在美国枪支暴力的结果相关的研究，以加深理解。具体来说，我们评估了七个不同的尺度：两个排名，两个计数和三个分数，从一系列来源产生。我们计算了比较的每对量表的斯皮尔曼相关系数。计算Cronbach的标准化α和Guttman的λ，以评估量表的相对可靠性，我们重新计算Cronbach的α后，系统地省略每个规模，以评估是否省略的规模有助于降低内部一致性的规模之间。因子分析用于确定单因子负荷和估计值。我们还在多变量回归分析中评估了枪支法的许可程度与枪支死亡和自杀总数之间的关联。所有的量表对高度相关（平均斯皮尔曼的相关系数r = 0.77），并具有较高的相对可靠性（克朗巴赫的α = 0.968，古特曼的λ = 0.975）。所有的尺度加载到一个单一的因素。量表的选择并没有有意义地改变枪支法的许可与枪支死亡和自杀之间的关联的参数估计。枪支法许可规模是高度相关的，尽管任何感知的政治议程，枪支法许可规模的选择对枪支暴力结果相关的研究结论影响不大。
Due to the differences in the way gun law permissiveness scales were created and speculation about the politically motivated underpinnings of the various scales, there have been questions about their reliability. We compared seven gun law permissiveness scales, varying by type and sources, for an enhanced understanding of the extent to which choice of a gun law permissiveness scale could affect studies related to gun violence outcomes in the United States. Specifically, we evaluated seven different scales: two rankings, two counts, and three scores, arising from a range of sources. We calculated Spearman correlation coefficients for each pair of scales compared. Cronbach’s standardized alpha and Guttman’s lambda were calculated to evaluate the relative reliability of the scales, and we re-calculated Cronbach’s alpha after systematically omitting each scale to assess whether the omitted scale contributed to lower internal consistency between scales. Factor analysis was used to determine single factor loadings and estimates. We also assessed associations between permissiveness of gun laws and total firearm deaths and suicides in multivariable regression analyses. All pairs of scales were highly correlated (average Spearman’s correlation coefficient r = 0.77) and had high relative reliability (Cronbach’s alpha = 0.968, Guttman’s lambda = 0.975). All scales load onto a single factor. The choice of scale did not meaningfully change the parameter estimates for the associations between permissiveness of gun laws and gun deaths and suicides. Gun law permissiveness scales are highly correlated despite any perceived political agenda, and the choice of gun law permissiveness scale has little effect on study conclusions related to gun violence outcomes.
登录
查看更多内容
影响因子：
4.6
作者：
Webster, Daniel W.;McCourt, Alexander D.;Stuart, Elizabeth A.
通讯作者：
Stuart, Elizabeth A.
影响因子：
4.7
作者：
Dien, J;Beal, DJ;Berg, P
通讯作者：
Berg, P
影响因子：
0.9
作者：
Akoglu H
通讯作者：
Akoglu H
影响因子：
5.1
作者：
Fowler KA;Dahlberg LL;Haileyesus T;Annest JL
通讯作者：
Annest JL
影响因子：
11.3
作者：
Rao, D;Zajecka, J;Skubiak, T
通讯作者：
Skubiak, T