Table 3 Accuracy and validity of child overweight and obesity classification based on parent-reported data as compared to electronic health record data

Overweight/obese (BMI-for-age percentile ≥ 85)

 Kappa

0.58 (0.53–0.63)

0.50 (0.39–0.55)

0.63 (0.54–0.70)

0.57 (0.44–0.66)

0.63 (0.41–0.68)

0.55 (0.42–0.64)

0.60 (0.39–0.70)

 Sensitivity

89.8 (85.3–93.2)

91.7 (82.1–96.8)

89.0 (83.7–93.0)

86.7 (76.8–93.3)

96.4 (82.9–99.8)

88.9 (81.3–94.2)

90.0 (75.6–97.3)

 Specificity

72.8 (70.2–74.8)

69.7 (66.2–71.6)

75.5 (71.5–78.6)

76.0 (71.4–79.1)

70.0 (60.5–72.4)

67.6 (61.8–71.7)

74.5 (66.7–78.5)

 Positive predictive value

65.7 (62.5–68.2)

52.4 (46.9–55.3)

73.7^a (69.4–77.0)

62.7 (55.5–67.5)

69.2 (59.5–71.7)

67.9 (62.2–71.9)

65.9 (55.3–71.2)

 Kappa

0.54 (0.47–0.60)

0.44 (0.31–0.51)

0.60 (0.50–0.68)

0.56 (0.39–0.68)

0.55 (0.30–0.69)

0.53 (0.40–0.61)

0.48 (0.26–0.58)

 Sensitivity

83.6 (76.4–89.3)

84.4 (68.1–94.0)

83.3 (74.9–89.7)

78.6 (61.1–90.4)

84.2 (63.4–95.6)

87.8 (76.4–94.7)

87.5 (63.4–97.8)

 Specificity

81.4^c (79.5–82.9)

79.3^c (76.6–80.9)

83.1^c (80.3–85.3)

88.3^c (85.3–90.3)

78.0^b (70.1–82.3)

75.2^b (71.1–77.7)

76.8 (71.2–79.2)

 Positive predictive value

54.2^c (49.5–57.8)

40.3^c (32.5–44.9)

62.5^ac(56.2–67.3)

53.7 (41.7–61.8)

59.3 (44.6–67.3)

55.8^c (48.6–60.3)

46.7^c (33.8–52.1)