For boys the mean difference between self reported and measured values were 21 kg for weight 16 cm for height and 04 kgm2 for bmi. Self reported and measured weight and height data were collected during screening for a 2 year weight management study for obese women that compared two behavioral interventions for sustained weight loss.
Use And Reporting Of Bland Altman Analyses In Studies Of Self
Self reported weight and height. Errors in self reporting weight were directly related to a persons overweight status bias and unreliability in self report increased directly with the magnitude of overweight. 751 n 996 of participants self reported their weight within the range of 23 kg 5 pounds of their physically measured weight. 34 accurately self reported weight 52 under reported and 13 over reported. Self reported and measured weight did not differ significantly but participants significantly overestimated their height p 01 and this discrepancy resulted in a significantly lower self reported than measured body mass index p 05. The mean difference between measured and reported bmi was 114 kgm 2 p 00001. The prevalence of obesity bmi 30 kgm 2 based on self reported values was 56 whereas based on measured values it was 175.
As we now live in the telehealth world i have a question about self reported measures. Overall 52 accurately self reported height 30 under reported and 18 over reported. For girls the corresponding values were 12 kg 09 cm and 03 kgm2 table 3. More females 70 than males 35 under reported weight p001. A percentage of 304 n 413 of participants self reported their height within the range of 508 cm 2 inches of their physically measured height. The study was conducted by the yale prevention research center derby connecticut.
Today at 812 am. There was a significant difference between measured and reported weight mean difference375 lb p 00001 and height mean difference035 in p 00007. As a result of underestimating their weight and overestimating their height if using self reported measures approximately 315 n135 of the women would be classified into a lower bmi category. Although weight and height were reported on the average with small errors self reported weight and height are unreliable in important population subgroups. Prevalence of overweightobesity was 33 based on self report data and 39 based on measured data p016. Discrepancy scores did not differ by eating disorder or depressive symptoms sex or ethnicity although increasing age was associated with overestimation of height and underestimation of body mass index.
We observed that weight is under reported 11 26 kg for females and 04 31 kg for males and height over reported 11 22 cm for females and 17 21 cm for males in accordance with the literature. Is it permissible to code and bill. Is it allowable to select a bmi code and an obesity code following the guidelines from a patients self reported height and weight.