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Table 2 ADAPT self-reported weight/height and BMI compared with researcher-collected data (n = 30)

From: Validation of self-reported weights and heights in the avoiding diabetes after pregnancy trial (ADAPT)

 

Researcher collected data

Self-reported data

Mean difference

   

(Collected - self-reported)

   

Mean of individual difference

Range

 

Mean (SD)

Mean (SD)

  

Weight (kg)

    

 All

76.49 (13.6)

75.78 (13.40)

0.70 (1.92)

−5.89-3.63

0.93 (0.27)a

−2.08-3.63a

 Intervention group

75.08 (12.01)

73.99 (11.57)

1.09 (2.56)

−5.89-3.17

1.14 (0.82)a

−0.82-3.17a

Control group

77.31 (14.67)

76.82 (14.56)

0.48 (1.47)

−2.09-3.63

Height (cm)b

    

 All

162.27 (6.59)

162.94 (6.81)

−0.56 (1.91)

−5.54-2.06

 Intervention group

164.62 (7.5)

164.78 (7.75)

−0.69 (2.12)

−5.54-1.86

 Control group

160.92 (5.77)

161.92 (6.22)

−0.49 (1.84)

−3.76-2.06

Body mass index (BMI), kg/m2

    

 All

29.02 (4.76)

28.35 (4.84)

0.43 (1.01)

−1.32–2.43

0.46 (1.02)a

−1.32-2.43a

 Intervention group

27.62 (3.33)

26.41 (2.52)

0.61 (0.78)

−0.75-1.61

0.73 (0.75)a

−0.74-1.61a

 Control group

29.84 (5.33)

29.42 (5.52)

0.33 (1.12)

−1.32-2.43

  1. SD = standard deviation, kg = kilogram, cm = centimeter.
  2. aOmits observation of woman whose self-reported weight at 6 months (73.5 kg) was 8.7 kg over baseline weight and 6.2 kg over 9-month weight. She had a 68-day gap from self-report to home visit data collection.
  3. bOmits one observation where woman refused height measurement during home visit.