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Table 4 Proportion of subjects who ever had any BMI in the listed BMI classes

From: A statistical quality assessment method for longitudinal observations in electronic health record data with an application to the VA million veteran program

BMI class

All data, No QAa (N = 10,377,511) (%)

Thresholding QAb (N = 9,098,710) (%)

Longitudinal QAc (N = 9,606,933) (%)

Underweight (BMI < 18.5)

4.54

1.47

2.24

Normal to overweight (BMI ≥ 18.5 and < 30)

75.56

76.46

73.07

Obese Class I/II/III (BMI ≥ 30 and < 40)

64.36

61.68

61.06

Obese Class III (BMI ≥ 40)

14.54

6.69

11.39

  1. aExcluded 0% data
  2. bQA excluded 12.3% data
  3. cQA excluded 7.4% data
  4. QA methods excluded all records with a QS or QR score ≤ 0.05
  5. N is the number of usable records included in the BMI classification