Wednesday, August 27, 2014

Detail in NAICS Codes in 2011 NHS PUMF


A faculty member is interested in obtaining the NAICS codes for Industry sectors for the Alberta Census divisions in the 2011 NHS PUMF. There is a question in the survey that indeed identifies the NAICS codes, but it appears to only use the 2-digit codes which are very general in nature. The NAICS classification system actually breaks down the codes up to 5-digits; the PUMF User Guide seems slightly ambiguous about what is actually available. [Similar NAICS information also appears in the 2006 Census].

1) Do you know if the PUMF itself actually can be used to “disaggregate” the specific NAICS codes from the 2-digit levels to the 5-digit? (from what I can see the answer appear to be “no”)
2) If not available in the PUMF, who should I contact on behalf of the faculty member to inquire about the availability/cost of this particular disaggregated data?


You are correct: the PUMF does not provide any way to break out any variable into more detailed codes.

More detail on the industry variable should be found in the RDC master files (which would be free to access – but nothing about the NHS is yet listed about it on the RDC data site <>. I don’t know if the NHS in the RDC will go to 5 digits – it might only be 3 or 4 digits. If the prof needs 5-digit codes with all of the rest of the variables in the PUMF, I think that the only hope is the RDC … (Brad, do you have the 2011 NHS microdata, and, if so, can you tell me what level the NAICS (industry) variable goes to?)

If the prof doesn’t need the full PUMF detail, but only the counts by NAICS code for CDs, you can direct him to table 27 on < FREE=0&GC =0&GID =0& GK =0&GRP =0&PID=0&PRID=0&PTYPE=105277&S=0&SHOWALL=1&SUB=0 &Tempora l= 2013&THEME=96&VID=0&VNAMEE=&VNAMEF>= - Industry - North American Industry Classification System (NAICS) 2007 (425), Class of Worker (5), Age Groups (13B) and Sex (3) for the Employed Labour Force Aged 15 Years and Over, in Private Households of Canada, Provinces, Territories and Census Divisions, 2011 National Household Survey. Unfortunately, this table still only goes down to the 4-digit code. For the full 5-digit breakdown by CDs, a special tab would likely be needed – contact for more information. The one thing to be cautious of is the amount of suppression that might occur in the 5-digit table, even at the census division level – you and the prof might want to look at the table above for some measure of how much of a problem that might be.
- Page 62 of the 2011 guide: quoted and italicized below – it’s not totally clear that it goes beyond the 2 digits, but it does mention that there are subsectors, etc.

"Labour market activities NAICS – Labour: Industry sectors (based on the NAICS 2007)
Field: 79 Size: 2 Position: 157-158 Type: num

Description: Refers to the general nature of the business carried out in the establishment where the person worked. If the person did not have a job during the week of Sunday, May 1 to Saturday, May 7, 2011, the data relate to the job of longest duration since January 1, 2010. Persons with two or more jobs were required to report the information for the job at which they worked the most hours. The 2011 National Household Survey industry data are produced according to the NAICS 2007. The NAICS provides enhanced industry comparability among the three North American Free Trade Agreement (NAFTA) trading
partners (Canada, United States and Mexico). This classification consists of a systematic and comprehensive arrangement of industries structured into 20 sectors, 102 subsectors and 324 industry groups. The criteria used to create these categories are similarity of input structures, labour skills or production processes used by the establishment.
Reported for: Persons in private households aged 15 years and over, who worked at some time since January 1, 2010 Code Description Unweighted Weighted Includes: . . ."

- Page 4 also lists:

“The smallest geographic unit in the 2011 PUMF is the census metropolitan area (CMA). Data at the scale of geographic areas smaller than CMAs are not provided for this product. Also, the user will find that this product contains only information on the largest census metropolitan areas and the provinces. The Yukon, the Northwest Territories and Nunavut are grouped under the term 'Northern Canada.' Furthermore, the data have been aggregated in such a way as to preserve confidentiality while, at the same time, providing as much detail as possible in order to maintain the analytical value of the file. For example, the data on mother tongue do not indicate 'Mandarin,' but rather the more general category 'Chinese languages.' This category also includes other mother tongue languages, such as 'Cantonese.'”