| 1. |
The table shows changes in the physical activity
level of the 1994/1995 household population 12 years or
over, between cycle 1 and another cycle of the National Population
Health Survey. Population, age, sex, Canada and province are based on the
first survey cycle (cycle 1) in 1994/1995. Respondents are classified
as active, moderately active or inactive based on an index of average daily
physical activity over the past 3 months. For each leisure time
physical activity engaged in by the respondent, an average daily energy expenditure
is calculated by multiplying the number of times the activity was performed
by the average duration of the activity by the energy cost (kilocalories per
kilogram of body weight per hour) of the activity. The index is calculated
as the sum of the average daily energy expenditures of all activities. Respondents
are classified as follows with regards to physical activity: 3.0 kcal/kg/day
or more = active; 1.5 to 2.9 kcal/kg/day = moderately
active; less than 1.5 kcal/kg/day = inactive. |
| 2. |
The table excludes persons who died or who
were institutionalized after cycle 1 survey interview in 1994/1995.
Estimated number of persons who have died: 1,279 persons after cycle 5 and 1,640 persons
after cycle 6. These data are not all confirmed yet with the Canadian
Vital Statistics Database. Persons living in an institution are excluded because
they are not asked certain questions. Estimated number of persons who have
been institutionalized: 161 persons at cycle 5 and 144 persons
at cycle 6. |
| 3. |
The table also excludes non-response (missing
values), that is, "not applicable", "don't know", "refusal" and "not stated".
|
| 4. |
No estimates for physical activity level are
provided for 1994/1995; what is shown instead are the changes in the
physical activity level. |
| 5. |
Percentages are based on the population with
a specific characteristic (one category) in a given cycle as the numerator
divided by the total population in 1994/1995 having all possible
characteristics (all categories) as the denominator, excluding missing values.
|
| 6. |
Bootstrapping techniques were used to produce
the coefficient of variation (CV) and 95% confidence intervals (CIs).
|
| 7. |
Data with a coefficient of variation (CV) from 16.6%
to 33.3% are identified by an (E) and should be interpreted with caution.
|
| 8. |
Data with a coefficient of variation (CV) greater
than 33.3% were suppressed (F) due to extreme sampling variability. |
| 9. |
Changes in physical activity of the 1994/1995 population
in 2004/2005 are based on the 2004/2005 longitudinal full
cycle 1 and cycle 6 subset of respondents (from 2004/2005 longitudinal
data file). This subset contains all panel members with a complete (full)
response in cycle 1 (1994/1995) and cycle 6 (2004/2005),
regardless of their response pattern in cycle 2 (1996/1997), cycle 3 (1998/1999),
cycle 4 (2000/2001) and cycle 5 (2002/2003). Number of
respondents for this table (excluding missing values): 8,550. |
| Note(s): |
When comparing estimates, it is important to use confidence intervals
to determine if differences between values are statistically significant.
Confidence intervals describe sampling variability and give an indication
of the precision of a given estimate. Please note that confidence intervals
and coefficient of variations are provided in the CANSIM tables. |
| Source(s): |
Statistics Canada, National Population Health Survey, 2002/2003 and 2004/2005 longitudinal
data file (CANSIM table 104-7040).
|