Incidence rate ratios (IRRs) were calculated using a Poisson regression model, whereby the number of incident cases per year were used as count data (dependent variable), population counts were used as exposure data (denominator), and age, sex, and lesion type served as predictors (independent variable) for the incidence rate.
Population data (denominators) used for rate estimations were obtained from the 1991 census of Guinea-Bissau.
In the event of missing data, denominators were adjusted to compare proportions of individuals responding to survey items.
Other limitations include a reliance on self-reported data; varying denominators and exclusions from testing; insufficient details to fully understand interventions and those with known infection introducing a bias by either not disclosing status then being tested or refusing testing.
Censuses provide essential data on population denominators and the opportunity to collect national mortality data through direct recall of household events in defined time periods, or indirect measures by collecting information on parental, spousal, sibling or child survival.
At that point, we could think of the operations as being defined in terms of data objects --- numerators, denominators, and rational numbers --- whose behavior was specified by the latter three functions.
The clinical trial originally was to also measure central line-associated bloodstream infections (CLABSI) and MRSA urinary cultures, but CLABSI data was dropped due to inability to acquire standardized denominators and data on the revised metric, urinary infections, is still pending [ 40].
The demographic data to derive population denominators and calculate TB incidence were obtained from the public-use files of the Italian National Institute of Statistics and refers to the balances on resident population on 31st December of the previous year for each considered year [ 11].
Incidence rates were calculated using regional demographic data as the denominator and compared using Poisson counts.
A random national sample (stratified by state using Australian Bureau of Statistics ABSS) [ 20] population data as the denominator and proportionally represented for metropolitan and rural populations) of 1100 community pharmacists and 1100 GPs was collected from a healthcare data information company database.
