Labour Force Survey 2. quarter 1973 - 3. quarter 1974, panel file.

Labour Force Sample Survey 2. quarter 1973 - 3. quarter 1974, panel file.

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.

Overview of LFS panels with detailed explanation for panel files:

Pool 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 |
Quarter12345| 1234 | 1234 | 1234 | 1234 | 1234 | 1234 | 1234 | 1234 |
----------------------------------------------------------------------------------------------------------
-4 00 0| 0 | | | |
-3 00 | 00 | | | |
-2 00 | 00 | | | |
-1 00| 00 | | | |
------------|------|------|------|------|-----------
1 0| 0 0 | 0 | | |
2 | XX | XX | | |
3 | XX | XX | | |
4 | XX | XX | | |
------------|------|------|------|------|--------------
5 | X | X X | X | |
6 | | XX | XX | |
7 | | XX | XX | |
8 | | XX | XX | |
9 | | 0 | 0 0 | |
10 | | | 00 | |
11 | | | 00 | |
12 | | | 00 | |
13 | | | 0 | |
14 | | | | 000 |
15 | | | | XXXX |
16 | | | | 0 0 | 0
17 | | | | XX | XX
18 | | | | XX | XX
19 | | | | XX | XX
----------------------------------------------------------------------------------------------------------

Panel files are created by linking eight interviews from an ordinary interview round of the Labour Force Survey. In the table above this means that one could connect all the batches (lines) marked X. Group 1 is removed because the interviews started 4th quarter 1971. Participation 4 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 4 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.

1973年第二季度至1974年第三季度劳动力抽样调查面板文件。

自1972年第一季度起，SSB便启动了官方季度劳动力抽样调查（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依据与统计素材。1996年，AKU进行了重大修订，涉及调查问卷、文件说明以及行业与职业编码标准；数据采集方式也变更为计算机辅助电话调查（CATI，Computer Assisted Telephone Interviewing）。新版行业分类标准（NOS C 182，基于欧盟NACE Rev.1标准）正式启用，该标准分别于2002年与2007年完成更新。此外，自1996年起，调研开始采用基于国际职业分类标准ISCO 88制定的新版挪威职业分类标准（STYRK）。由于新版职业分类体系未设计对应的社会经济地位变量，原有的社会经济地位标识变量被移除。

劳动力抽样调查面板数据集概览（含面板文件详细说明）：

样本池 | 1971年 | 1972年 | 1973年 | 1974年 | 1975年 | 1976年 | 1977年 | 1978年 | 1979年 |
季度标识1-5 | 季度1-4 | 季度1-4 | 季度1-4 | 季度1-4 | 季度1-4 | 季度1-4 | 季度1-4 | 季度1-4 |
----------------------------------------------------------------------------------------------------------
-4 00 0| 0 | | | |
-3 00 | 00 | | | |
-2 00 | 00 | | | |
-1 00| 00 | | | |
------------|------|------|------|------|-----------
1 0| 0 0 | 0 | | |
2 | XX | XX | | |
3 | XX | XX | | |
4 | XX | XX | | |
------------|------|------|------|------|--------------
5 | X | X X | X | |
6 | | XX | XX | |
7 | | XX | XX | |
8 | | XX | XX | |
9 | | 0 | 0 0 | |
10 | | | 00 | |
11 | | | 00 | |
12 | | | 00 | |
13 | | | 0 | |
14 | | | | 000 |
15 | | | | XXXX |
16 | | | | 0 0 | 0
17 | | | | XX | XX
18 | | | | XX | XX
19 | | | | XX | XX
----------------------------------------------------------------------------------------------------------

面板文件通过将劳动力抽样调查常规访谈轮次中的8次访谈记录进行关联拼接而成。上表中，所有标记为X的行（批次）即可进行关联拼接。由于第1组访谈始于1971年第四季度，因此该组被移除；入选标准为参与调查满4次。

年度文件与季度文件包含首次参与、第二次参与等不同轮次的受访者数据。通过权重设置，可将此类横截面数据（即列数据）与全国统计数据进行校准对齐。若将四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（即表格中的横向行对应的面板文件）都会为每个季度单独编制权重。尽管各季度权重之间差异不大，但权重均为独立编制，且每个权重仅可用于对应季度生成的数据集。

加权统计值仅适用于单个样本池，即约占季度总抽样样本12.5%（1/8）的样本。因此，需将加权统计值乘以4，以近似推算全国季度统计数据。此处“近似全国季度统计数据”指由于面板抽样与样本流失的影响，计算结果可能与全国季度加权统计值存在偏差。受样本流失影响，加权统计值会低于全国总统计值。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。