Labour Force Survey 2nd quarter 2014 - 1st quarter 2016, panel

Labour Force Survey 2nd quarter 2014 - 1st quarter 2016, 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| --------------------------------------------------------------------------------------------- |____|____|____|__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 --------------------------------------------------------------------------------------------- |____|____|____|____|____|_XXX|XXXX|X___| 2016,1 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年第二季度至2016年第一季度劳动力调查面板数据（8个季度周期）

挪威统计局（SSB）自1972年第一季度起开展官方季度劳动力调查（AKU），旨在为劳动力管理部门及其他相关方提供人口职业结构及其随时间演变的相关信息，为职业预测与劳动力研究提供基础统计资料。

1996年，AKU进行了重大修订：修订了问卷、文件说明以及行业与职业编码标准，数据采集方式改为计算机辅助电话调查（Computer Assisted Telephone Interviewing, CATI）；启用基于欧盟标准NACE Rev.1的挪威行业分类标准NOS C 182，该标准分别于2002年和2007年完成更新。自1996年起，还采用了基于ISCO 88的新版挪威职业分类标准（STYRK）。由于新版职业分类体系未开发对应社会经济地位的指示变量，原社会经济地位指示变量被移除。

每季度的AKU调查都会新增若干问题，以采集符合欧盟统计局（Eurostats）及欧盟规范的数据。1996年起，调查轮换方案调整为：每个受访住户连续参与8个季度的调查；同时抽样方案改为以县级为分层单位。

以下为基于新轮换方案编制的面板文件数据采集说明，1997年第四季度的受访群体为首批完成8次完整访谈的样本批次：

Pool |2009 |2010|2011|2012|2013|2014|2015|2016|
Quarter |1234|1234 |1234|1234 |1234|1234|1234|1234|
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|____|____|____|__XX|XXXX|XX__|____|____| 2014,2
|____|____|____|____|XXXX|XXXX|____|____| 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
---------------------------------------------------------------------------------------------
|____|____|____|____|____|_XXX|XXXX|X___| 2016,1

面板文件通过将普通劳动力调查访谈轮次中的8次访谈数据关联整合而成，上表中标记为`X`的批次均可完成关联整合，以连续参与8次调查作为入选标准。年度文件与季度文件包含首次参与、第二次参与等不同受访轮次的受访者。权重设置可使各横截面（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，需将季度权重除以4以得到正确的年度加权数值。

每个面板（表格中横向的面板文件）会为每个季度生成专属权重。尽管各季度权重差异不大，但均为独立编制，且仅可用于对应季度的数据集。加权数值仅适用于单个样本池，即约占季度总抽样样本12.5%（1/8）的子样本，因此需将加权数值乘以8以近似得到全国季度总量。此处的“近似全国季度总量”需注意：由于面板抽样与样本流失问题，计算结果可能与全国季度加权总量存在偏差，样本流失会导致加权计算得到的数值低于全国总数值。权重设置的核心目的并非生成全国总量，而是尽可能保障样本的代表性。