Table 4.

Accuracy of parent-proxy reported anthropometric data for weight, height, BMI, BMI z-score, and BMI percentile.

Accuracy of parent-report data
Classification†	Overall (n = 55)	≤7d TG (n = 37)	>7d TG (n = 18)	≤7d TG + Direct (n = 24)	>7d TG + Direct (n = 15)
Weight (kg)a	n%
Accurate	67.27	81.08	66.67	91.67	60.00
Underestimation	27.27	16.22	16.67	8.33	20.00
Overestimation	5.45	2.70	16.67	0.00	20.00
Height (cm)b	n%
Accurate	36.36	40.54	27.78	54.17	26.67
Underestimation	43.64	43.24	44.44	41.67	53.33
Overestimation	20.00	16.22	27.78	4.17	20.00
Body mass index (BMI)c	n%
Accurate	58.18	67.57	38.89	83.33	53.33
Underestimation	18.18	10.81	33.33	16.67	33.33
Overestimation	23.64	21.62	27.78	0.00	13.33
BMI z-scored	n%
Accurate	72.73	83.78	55.56	91.67	73.33
Underestimation	10.91	5.41	22.22	8.33	13.33
Overestimation	16.36	10.81	22.22	0.00	13.33
BMI percentilee	n%
Accurate	27.27	29.73	22.22	33.33	26.67
Underestimation	32.73	27.03	44.44	20.83	33.33
Overestimation	40.00	43.24	33.33	45.83	40.00

^†All accuracy, underestimations, and overestimations reference the comparison of parent-reported measurements to well-child visit (WCV) measurements as the standard.

^aAccurate within ± 1 kg, underestimation by > 1 kg, overestimation by > 1 kg.

^bAccurate within ± 2 cm, underestimation by > 2 cm, overestimation by > 2 cm.

^cAccurate within ± 1 BMI pt, underestimation by > 1 BMI pt, overestimation by > 1 BMI pt.

^dAccurate within ± 1 SD, underestimation by > 1 SD, overestimation by > 1 SD.

^eAccurate within ± 5%, underestimation by > 5%, overestimation by > 5%.