Los Angeles, for example, has implemented "watering days" which assign residences specific days of the week they are permitted to water outdoors based upon their addresses.
However, if only the residence structure of the populations differed, as they did in the two survey years but the age structures and the age-residence-specific disability rates were identical in 1987 and 2006, then the overall disability rate in 2006 would be 0.02 points higher than that for 1987.
We estimated residence-specific BC and PM2.5 exposures using validated spatiotemporal land use regression models.
For residence-specific analyses, we excluded cases of invasive GAS infection if residence was missing or unknown.
For exposure data we used two different indicators: predicted 10 x 10 km PM2.5 and residence-specific cumulative traffic density.
Incidence of SSAs for residence-specific and gender-specific subpopulations and incidence of suicide deaths and hospitalisations were also calculated.
Health Canada had access to residence-specific information that was used to estimate average CDBP exposure levels between 1940 and 3 years before the interview.
It is possible that regional BC may better reflect exposure than residence-specific BC, because participants may not be at home during the day.
Although this average exposure metric was available to us for analysis, the residence-specific levels were unavailable for reasons of confidentiality.
When residence-specific PM2.5 concentrations were not available (n = 8), we used the estimated average PM6 concentration for the study (12 μg/m).
Weighted analysis was conducted to calculate the age, gender, and residence-specific vaccination rates and frequencies, accounting for the age, gender, and urban/suburban population distribution of the Beijing population, as reported in the 2010 Census of Beijing.
