Labour Force Survey 1st quarter 2014 - 4th quarter 2015, panel

Labour Force Survey 1st quarter 2014 - 4th quarter 2015, panel (8 quarters) As of the 1st quarter of 1972, SSB has conducted official quarterly labour force surveys (AKU). These surveys aim to give the labour force authorities (and other people interested) knowledge of the occupational structure of the population and how it develops over time. The surveys are meant to give a foundation and statistical material for occupational prognoses and labour research. In 1996, AKU was significantly revised: The questionnaire, the file description and the standard for coding of industry and occupation. The data collection also changed to CATI - Computer Assisted Telephone Interviewing. A new classification of industry was put into use (NOS C 182, based on the EU standard NACE, Rev.1). This standard was updated in 2002 and 2007. Also, the new Norwegian standard classification of occupations (STYRK) based on ISCO 88 was used from 1996 and onwards. The variable indicating socio-economic status was omitted, as a similar variable was not developed in the new occupational classification. Every second quarter AKU is extended with a number of questions to collect data accordant to Eurostats / EUs spesifications. From 1996, the rotation schedule changed, each family now attends eight consecutive quarters. As of 1996 the selection shedule was changed as well with stratification at the county level. Summary of AKU panels with detailed explanations for panel files: Data collection for the new rotation plan as the basis for this file is shown below. Participants in the 4th quarter of 1997 is the first batch of 8 possible completed interviews. Pool |2009 |2010|2011|2012|2013|2014|2015|2016| Quarter |1234|1234 |1234|1234 |1234|1234|1234|1234| --------------------------------------------------------------------------------------------- |____|____|____|_XXX|XXXX|X___|____|____| 2014,1 |____|____|____|__XX|XXXX|XX__|____|____| 2014,2 |____|____|____|___X|XXXX|XXX_|____|____| 2014,3 |____|____|____|____|XXXX|XXXX|____|____| 2014,4 --------------------------------------------------------------------------------------------- |____|____|____|____|_XXX|XXXX|X___|____| 2015,1 |____|____|____|____|__XX|XXXX|XX__|____| 2015,2 |____|____|____|____|___X|XXXX|XXX_|____| 2015,3 |____|____|____|____|____|XXXX|XXXX|____| 2015,4 Panel files are created by linking eight interviews from an ordinary interview round of the Labour Force Survey. In the table above means that one could connect all the batches (lines) marked X. Participation 8 times used as a criterion for selection. Annual files and quarterly files consist of respondents who are participating for 1st time, 2nd time, and so on. The weights allow such cross-sections (columns) can be balanced with national figures. If 4 quarters is merged into an annual volume, the quarterly weights be divided by four to attain correct weighted annual numbers. Each panel (panel files: horisontal in the table) will have a weight compiled for each quarter. Although the weights do not differ much from each other, they will be compiled independently, and each weight should be used only for the data which the quarterly weight is made for. Weighted numbers is valid for one pool, which means ca 12,5 % (1/8) of a total quarterly selection. Therefore, one must multiply by 8 to approximate national quarterly figures. By "Approximate national quarterly figures" it means that differences from the quarterly national weighted figures can appear, because of the selections and whitdrawal in the connection of the panels. Because of the whitdrawal inflated numbers will be lower than the national total figures. The main point of the weights is not to is not to give national totals, but rather to ensure the best possible representation.

2014年第一季度—2015年第四季度劳动力调查（8季度追踪面板）

自1972年第一季度起，SSB便开展官方季度劳动力调查（AKU）。此类调查旨在为劳动力管理部门及其他相关从业者提供人口职业结构及其随时间演变的相关信息，同时为职业预测与劳动力研究提供基础数据与统计素材。

1996年，AKU进行了大幅修订，涵盖问卷、数据集说明以及行业与职业编码标准三大方面。同时，数据采集方式调整为计算机辅助电话调查（CATI，Computer Assisted Telephone Interviewing）。新的行业分类标准（基于欧盟NACE Rev.1标准的NOS C 182）正式启用，并分别于2002年和2007年完成更新。此外，自1996年起，基于国际职业分类标准ISCO 88的新版挪威职业分类标准（STYRK）投入使用。由于新版职业分类体系未开发对应变量，原有的社会经济地位指示变量被移除。

每间隔一个季度，AKU便会新增一批问题，以采集符合欧盟统计局（Eurostats）及欧盟规范的相关数据。

自1996年起，调查轮换机制进行了调整：每名受访家庭需连续参与8个季度的调查；同时，抽样方案也进行了优化，采用县级层面的分层抽样。

以下为AKU追踪面板汇总说明，附带面板数据集的详细解释：本数据集基于新版轮换方案的数据采集规则构建。1997年第四季度的受访对象为首批完成8次访谈的样本组。轮换池（Pool）结构如下：
| 轮换池 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 |
|--------|------|------|------|------|------|------|------|------|
| 季度 | 1234 | 1234 | 1234 | 1234 | 1234 | 1234 | 1234 | 1234 |
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| 2014年第一季度 | | | | _XXX | XXXX | X___ | | |
| 2014年第二季度 | | | | __XX | XXXX | XX__ | | |
| 2014年第三季度 | | | | | XXXX | XXXX | | |
| 2014年第四季度 | | | | | | | | |
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| 2015年第一季度 | | | | | _XXX | XXXX | X___ | |
| 2015年第二季度 | | | | | __XX | XXXX | XX__ | |
| 2015年第三季度 | | | | | | XXXX | XXXX | |
| 2015年第四季度 | | | | | | | | |
面板数据集通过将普通劳动力调查中同一受访者的8次访谈记录进行关联整合得到。上表中带标记X的行即为可进行关联整合的样本组，以完成8次访谈作为样本入选的核心标准。

年度数据集与季度数据集分别包含首次参与、第二次参与及后续各轮次的受访对象。权重设置可确保各截面（即上表中的列）数据与全国统计数据保持平衡。若将4个季度的数据合并为年度数据集，则需将季度权重除以4，以得到准确的加权年度统计值。每个面板（即上表中的横向行所对应的面板数据集）均会为每个季度单独生成权重。尽管各季度权重差异较小，但均为独立编制，且仅可应用于对应季度的数据集。加权统计值仅适用于单个轮换池，即约占季度总抽样量12.5%（1/8）的样本。因此，需将加权统计值乘以8以近似得到全国季度统计数据。此处的“近似全国季度统计数据”指由于面板样本的抽样与失访问题，计算结果可能与全国加权季度统计值存在偏差。因失访导致的样本偏差会使统计值低于全国总数值。权重设置的核心目的并非生成全国总统计值，而是尽可能保证样本的代表性。