Uncertainty figures – Experiences that there are problems with people or gangs fighting or disturbing in their own residential area, percentage (%)

This is an uncertainty number, for more information see Unsafe data on kolada.se. “Experiences that there are problems with people or gangs fighting or interfering in their own residential area, percentage (%)” is an excise estimate from a sample survey. This means that the estimate is not necessarily representative of the population as a whole. However, with the point estimate ± the uncertainty number, one can most likely say that the true mean is within the range. Brå uses asymmetric confidence intervals, in Kolada the uncertainty number is given as the maximum distance between the confidence interval and the point estimate. This means that the point estimate ± uncertainty may differ in one direction to the confidence interval from the NTU. For example, 2019-2020 is merged and published for the last year, such as the year 2020 in Kolada, the results for 2021 and 2022 are merged and the joint result will be published in the year 2022 in Kolada.本数值为不确定度数值（uncertainty number），更多信息请参见kolada.se网站上的「不安全数据（Unsafe data）」栏目。本次统计的「民众或帮派在居住区内发生斗殴、滋事等问题的经历占比（%）」为抽样调查（sample survey）所得的估算值。这意味着该估算值未必能完全代表整体研究总体（population）的情况。不过，通过点估计值（point estimate）±不确定度数值，我们可以大概率推断真实均值（true mean）处于该区间范围内。瑞典预防犯罪委员会（Brå）采用非对称置信区间（asymmetric confidence intervals）；在Kolada平台中，不确定度数值被定义为置信区间（confidence interval）与点估计值之间的最大距离。这意味着点估计值±不确定度在单侧方向上的置信区间与NTU可能存在差异。例如，2019-2020年的数据会合并后以最后一年的名义发布，如在Kolada平台中以2020年名义发布；2021年与2022年的统计结果将被合并，并于2022年在Kolada平台发布联合统计成果。