Electric Lamps (Light Sources)

Detailed information for December 2001





Record number:


The purpose of this survey is to collect data on the shipments (including imports) of electric lamps (light bulbs and tubes) by the Electric Lamp Bulb and Parts Manufacturing Industry.

Data release - February 5, 2002


The monthly data collected by this survey (in thousands of units and thousands of dollars (factory billing price)) are the shipments (including imports) of electric lamps (light bulbs and tubes) by the Electric Lamp Bulb and Parts Manufacturing Industry.

The survey is a cost-recovery survey for the three major electric lamp manufactures in the industry.

This survey was discontinued after the December 2001 reference period.

Reference period: Month

Collection period: The first day to the 15th day of the month following the reference month


  • Manufacturing
  • Other manufactured products

Data sources and methodology

Target population

Classified under the North American Industrial Classification System (NAICS) code 335110, this industry comprises establishments primarily engaged in manufacturing all types of electric lamps (bulbs and tubes).


This is a sample survey with a cross-sectional design.

Data sources

Responding to this survey is mandatory.

Data are collected directly from survey respondents.

On a monthly basis the spreadsheet template is mailed electronically to each respondent. The completed template, with data for the current reference period is returned electronically, and if necessary a telephone follow-up call is carried out to clarify questions regarding the data. Data are captured, computer edited and tabulated within a 20 working day period after the reference date.

A copy of the spreadsheet used for data collection is available from the Division.


Contacting the respondent. A comparison with the previous month of the same year. A comparison with the same month of the previous year. Using historical ratios.

Quality evaluation

1. Observe trends in the industry
2. Comparison with MSM data
3. Compare data with national economy and other manufacturing industries.

Disclosure control

Statistics Canada is prohibited by law from releasing any information it collects that could identify any person, business, or organization, unless consent has been given by the respondent or as permitted by the Statistics Act. Various confidentiality rules are applied to all data that are released or published to prevent the publication or disclosure of any information deemed confidential. If necessary, data are suppressed to prevent direct or residual disclosure of identifiable data.

In order to prevent any data disclosure, confidentiality analysis is done using the Statistics Canada Generalized Disclosure Control System (G-Confid). G-Confid is used for primary suppression (direct disclosure) as well as for secondary suppression (residual disclosure). Direct disclosure occurs when the value in a tabulation cell is composed of or dominated by few enterprises while residual disclosure occurs when confidential information can be derived indirectly by piecing together information from different sources or data series.

Data accuracy

The survey frame is based mainly on the Annual Survey of Manufactures (ASM). Since the ASM lags behind this commodity survey, there is a risk of undercoverage but this is minimal because of advanced information from the ASM frame and feedback from the Monthly Survey of Manufacturing (MSM).


Date modified: