With regards to weight, there was a strong association between reported and measured values for both sexes (Table 1)
The consistency between estimated anthropometric indicators based on measurements (POF) and on reported values (VIGITEL) in the Brazilian population in 2008-2009 was analyzed using Pearson (r) and Lin ( ? ) estimators according to sex and age group
The analysis of consistency between reported and directly measured values in 2008-2009 were based on the premise that, in all of the comparisons, the values presented represent a mean estimate of the Brazilian population in the state capitals and metropolitan areas.
BMI based on reported height and weight values showed high concordance ( ? ) and correlation (r) with that calculated from directly measured values for both sexes (Table 2)
The height and weight means were stratified year on year from 20 to 29 years old and biennia between 30 and 39 years old to maintain the homogeneity of the sample.
The VIGITEL and POF height and weight Kik conexiГіn means were compared statistically for each age with values effectively measured using the student’s t-test. The p values
To show the effect of the reported and directly measured measurements, the values for height, weight and Body Mass Index were log-transformed and the differences versus the means plotted, as proposed by Bland & Altman. 2
Differences in values for height between POF and VIGITEL presented no systematic characteristics in men and were not associated with age. Differences in values for weight were not associated with age and the difference between means was not statistically significant at any age. There was no link between the differences in mean weight and the differences in mean height, i.e., when mean weight was higher in VIGITEL, mean height did not follow any trend of being higher or lower (Table 1). (tovább…)