Labour Force Survey 2nd quarter 2015 - 1st quarter 2017, panel

Labour Force Survey 2nd quarter 2015 - 1st quarter 2017, 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 |2011|2012|2013|2014|2015|2016|2017|2018|
Quarter |1234|1234|1234|1234|1234|1234|1234|1234|
---------------------------------------------------------------------------------------------
|____|____|__XX|XXXX|XX__|____|____|____| 2015, 2
|____|____|___X|XXXX|XXX_|____|____|____| 2015, 3
|____|____|____|XXXX|XXXX|____|____|____| 2015, 4
---------------------------------------------------------------------------------------------
|____|____|____|_XXX|XXXX|X___|____|____| 2016, 1
|____|____|____|__XX|XXXX|XX__|____|____| 2016, 2
|____|____|____|___X|XXXX|XXX_|____|____| 2016, 3
|____|____|____|____|XXXX|XXXX|____|____| 2016, 4
---------------------------------------------------------------------------------------------
|____|____|____|____|_XXX|XXXX|X___|____| 2017, 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.

劳动力调查 2015年第2季度-2017年第1季度 面板数据集（8个季度）

自1972年第1季度起，挪威统计局（SSB）开始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方提供关于人口职业结构及其随时间演变的信息，同时为职业预测与劳动力研究奠定基础并提供统计素材。

1996年，AKU进行了重大修订，涉及问卷设计、文件说明及行业与职业编码标准。数据收集方式亦改为计算机辅助电话访谈（CATI）。新的行业分类标准（NOS C 182，基于欧盟NACE Rev.1标准）开始启用，并分别于2002年和2007年更新。此外，基于ISCO 88的挪威新职业分类标准（STYRK）自1996年起投入使用。由于新职业分类中未设置类似变量，社会经济地位指标被剔除。

每两个季度，AKU会增加若干问题，以收集符合欧盟统计局（Eurostat）/欧盟规范的数据。

自1996年起，轮换计划发生变更，每个家庭需连续参与8个季度的调查。同期，抽样计划亦调整为按郡级分层抽样。

AKU面板数据集摘要及面板文件详细说明：下文展示了作为本文件基础的新轮换计划的数据收集情况。1997年第4季度的参与者是首批完成8次访谈的群体。

Pool |2011|2012|2013|2014|2015|2016|2017|2018|
Quarter |1234|1234|1234|1234|1234|1234|1234|1234|
---------------------------------------------------------------------------------------------
|____|____|__XX|XXXX|XX__|____|____|____| 2015, 2
|____|____|___X|XXXX|XXX_|____|____|____| 2015, 3
|____|____|____|XXXX|XXXX|____|____|____| 2015, 4
---------------------------------------------------------------------------------------------
|____|____|____|_XXX|XXXX|X___|____|____| 2016, 1
|____|____|____|__XX|XXXX|XX__|____|____| 2016, 2
|____|____|____|___X|XXXX|XXX_|____|____| 2016, 3
|____|____|____|____|XXXX|XXXX|____|____| 2016, 4
---------------------------------------------------------------------------------------------
|____|____|____|____|_XXX|XXXX|X___|____| 2017, 1

面板文件通过关联劳动力调查常规访谈轮次中的8次访谈生成。上表中标记为X的批次（行）可相互关联。参与8次访谈是入选的标准之一。

年度文件和季度文件包含首次、第二次及后续参与的受访者。权重可使此类横截面（列）数据与全国数据保持平衡。若将4个季度合并为年度数据，则需将季度权重除以4以获得正确的加权年度数值。

每个面板（面板文件：表中横向）针对每个季度均有独立计算的权重。尽管各权重差异不大，但它们是独立编制的，且每个权重仅适用于其对应的季度数据。加权数值适用于一个池（pool），约占季度总抽样量的12.5%（1/8）。因此，需乘以8以近似全国季度数据。

“近似全国季度数据”指由于面板关联过程中的抽样与退出情况，其与全国季度加权数据可能存在差异。由于退出率的存在，膨胀后的数值将低于全国总数据。权重的主要目的并非提供全国总量，而是确保尽可能优的代表性。