In a so-called calibration study, known data on the observed relationship between an independent variable of the population-based short version of the assessment instrument and the dependent variable of the gold-standard instrument are used to make estimates of other "true" values of the independent variable from new observations of the gold standard.
Summary statistics for the harmonised variables of the population subgroups considered for analysis are reported in Table 1.
Earlier data collected in the POPS study also included disability-status variables of the population.
Baseline participants were representative of demographic variables of the population [ 28].
Considering epidemics with relatively short time-courses, we ignore the effect of recruitment, natural death, and other demographic variables of the population.
Linear regression models to assess the relationship between the square root-transformed Cmin ratio and demographic and clinical variables of the population were carried out (Table 5).
The educational level of the deceased was obtained through the municipal census, which includes socio-demographic variables of the population of Barcelona, by means of a record linkage between the register of mortality and the municipal census of Barcelona (complete for 94.7% of deaths).
IBA acquires the solution by statistical learning and sampling the control variable intervals of the population in each iteration.
This is done in Figs. 1, 2, and 3, which compare the distribution of the wealth variable in the population of soon-to-be migrant households and in the whole population.
However, BMI thresholds for overweight and obesity are based on the distribution of the variable in the population and are arbitrarily defined [ 10].
Our data consisted of continuous measurements of variables at the population level, summarised at regular, evenly spaced time intervals, making them suitable for interrupted time series analysis.
