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Table 5 Multivariate analyses of variance of associations between response capability and difference between self-reported and directly measured weight, height and BMI

From: Validity of self-reported height and weight among adolescents: the importance of reporting capability

  Model 1* Model 2**
  Difference in self-reported and directly measured weight Difference in self-reported and directly measured weight
  Boys Girls Boys Girls
  B (kg) P value B (kg) P value B (kg) P value B (kg) P value
Weighing history         
Weighed recently Ref.   Ref.   Ref.   Ref.  
Not weighed recently 0.4178 0.3306 −1.1977 <0.0001 0.5586 0.1569 −1.0197 <0.0001
Recall ability for weight         
High Ref.   Ref.   Ref.   Ref.  
Low −0.5377 0.3580 −1.3932 <0.0001 −0.2290 0.6707 −0.9902 0.0024
Response capability for weight         
Weighed recently + high recall ability Ref.   Ref.   Ref.   Ref.  
Weighed recently + low recall ability −0.1214 0.9055 −2.1313 0.0001 0.5085 0.5890 −1.6961 0.0008
Not weighed recently + high recall ability 0.7962 0.1108 −1.3159 0.0002 0.9603 0.0364 −1.2345 <0.0001
Not weighed recently + low recall ability −0.4524 0.5145 −1.2579 0.0028 −0.2233 0.7261 −0.8671 0.0240
  Difference in self-reported and directly measured height Difference in self-reported and directly measured height
  Boys   Girls      
  B (cm) P value B (cm) P value B (cm) P value B (cm) P value
Height measuring history         
Measured recently Ref.   Ref.   Ref.   Ref.  
Not measured recently −0.1000 0.7886 −0.0002 0.9994 −0.1867 0.5996 0.0040 0.9873
Recall ability for height         
High Ref.   Ref.   Ref.   Ref.  
Low −0.4949 0.1786 −0.1885 0.5077 −0.5693 0.1207 −0.2105 0.4483
Response capability for height         
Measured recently + high recall ability Ref.   Ref.   Ref.   Ref.  
Measured recently + low recall ability −0.6893 0.1552 0.0092 0.9824 −0.7789 0.1068 0.0282 0.9459
Not measured recently + high recall ability −0.0610 0.8925 0.1533 0.6119 −0.1728 0.7010 0.1945 0.5183
Not measured recently + low recall ability −0.3046 0.5553 −0.2948 0.4287 −0.4020 0.4343 −0.3449 0.3530
  Difference in BMI z-score based of self-reported and direct measures of weight and height Difference in BMI z-score based of self-reported and direct measures of weight and height
  Boys Girls Boys Girls
  B P value B P value B P value B P value
BMI response capability***         
High Ref.   Ref.   Ref.   Ref.  
Low 0.0404 0.4576 −0.1252 0.0019 0.0576 0.2684 −0.1042 0.0077
  1. * adjusted for age, family occupational social class, family structure and migration. A random effect of school was included to adjust for the design effect introduced by the applied cluster sampling approach.
  2. ** adjusted for age, family occupational social class, family structure, migration and direct measure of height and/or weight. A random effect of school was included to adjust for the design effect introduced by the applied cluster sampling approach.
  3. ***High BMI response capability = measured recently + high recall ability for height + weighed recently + high recall ability for weight, Low combined response capability = remaining categories.
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BMC Medical Research Methodology

ISSN: 1471-2288

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