ENVIRONICS RESEARCH GROUP National Survey on Charter Rights Issues PN5102
Fieldwork Dates: February
11-17, 2002
Prepared for: CRIC
Prepared by: Environics Research Group Limited, June 2002
Environics Research Group Limited 33 Bloor Street East, Suite 900 Toronto, Ontario tcl:
416.920.9010;
fax: 416.920.3299
Survey
Methods
The results of the survey are based on
questions asked to 1,402 Canadians 18 years of age and older living within the
ten provinces of Canada. The survey was conducted by telephone from February 11
to 17, 2002.
Sample Selection
The sampling method was designed to complete
approximately 1,400 interviews within households randomly selected across
Canada. It is drawn in such a way that it represents the Canadian population
with the exception of those Canadians living in the Yukon, Northwest
Territories or Nunavut. Regional quotas were used to
allocate interviews; these quotas were designed to increase the size of the
sample in Quebec.
The actual sample is as follows. Region, |
Quota |
Unweighted N |
Weighted N |
Margin of Error |
Atlantic Provinces |
125 |
127 |
114 |
8.7 |
Quebec |
500 |
499 |
353 |
4.4 |
Ontario |
400 |
400 |
525 |
4.9 |
Manitoba/Saskatchewan |
125 |
126 |
99 |
8.7 |
Manitoba |
|
56 |
53 |
13.1 |
Saskatebervan |
|
70 |
46 |
11.7 |
Alberta |
125 |
125 |
127 |
8.8 |
British Columbia |
125 |
125 |
184 |
8.8 |
Total |
1,400 |
1,402 |
1,402 |
2.6 |
The sampling model relies on the stratification
of the population by ten provinces and by six community sizes (1,000,000
inhabitants or more, 100,000 to 1,000,000 inhabitants, 25,000 to 100,000
inhabitants, 10,000 to 25,000 inhabitants, 5,000 to 10,000 inhabitants and
under 5,000 inhabitants).
Environics uses a RDD (random
digit dialing) sample selection technique. Telephone numbers are selected from
the most recently published telephone directories, thus ensuring that only
valid telephone exchanges are used. These numbers act as "seeds" or
elements from which the sample is randomly generated. The numbers in the sample
elements are selected in such a way that they are representative of the
geographic area(s) under study. This sample selection technique ensures both
unlisted numbers and numbers listed after the directory publication are
included in the sample.
During fieldwork, a
total of 15,352 telephone numbers were drawn from the initial sample. From
within each household contacted, respondents 18 years of age and older were
screened for random selection using the "most recent birthday"
method. The use of this technique produces results that are as valid and
effective as enumerating all persons within a household and selecting one
randomly.
A screening question was asked to exclude from
the final sample households in which any member is employed by an advertising
or market research firm or in the media.
In the data analysis, the results of the survey
were weighted to reflect the actual proportion of over and under-sampled
segments in the population. For this survey, results have been weighted by age,
gender and region.
Telephone Interviewing
Interviewing was conducted at Environics'
central facilities in Toronto and Montreal.
Field supervisors were present at all times to
ensure accurate interviewing and recording of responses. Ten percent of each
interviewer's work was unobtrusively monitored for quality control in
accordance with the standards set out by the Canadian Association of Marketing
Research Organizations.
A minimum of five calls were made to a
household before classifying it as a "no answer."
Completion Results
A total of 1,402 interviews were completed. The margin
of error for a sample of 1,402 is +/- 2.6 percentage points, 19 times in 20.
The margins are wider for regional and demographic subsamples.
The following table presents the detailed completion results for this
survey of 1,402 interviews.
Dialled sample |
15,352 |
Household not eligible |
153 |
Non-residential/not in service |
4,141 |
Language barrier 360 |
|
Subtotal |
4,654 |
New Base (15,352-4,654) |
10,698 |
No answer/line busy/ |
|
respondent not available |
4,739 |
Refusals |
4,490 |
Mid-interview refusals |
67 |
Subtotal |
9,296 |
Net Completions (10,698-9,296) |
1,402 |