Ramos Mejía Rosario, Caino Silvia, Fano Virginia, Kelmansky Diana
Servicio de Crecimiento y Desarrollo, Hospital de Pediatría "Prof. Dr. J. P. Garrahan".
Instituto de Cálculo, Facultad de Ciencias Exactas, Universidad Nacional de Buenos Aires.
Arch Argent Pediatr. 2018 Dec 1;116(6):e721-e729. doi: 10.5546/aap.2018.eng.e721.
When height cannot be measured or does not account for actual bone growth in children, due to their condition, it may be estimated using equations based on body segments.
A sample of children and adolescents without musculoskeletal alterations. Height, arm span, length of the ulna, the forearm, the tibia and the leg, weight, and pubertal development were registered. BMI was estimated. Differences and agreements between OH and PH were analyzed using the Bland-Altman method and an intraclass correlation coefficient. For BMI, the absolute prediction error and agreement were estimated using a Kappa coefficient.
Two hundred and twenty children and adolescents aged 6.04-19.1 years were included. The intraclass correlation coefficient between PH and OH was > 0.9 in all equations. In average, PH overestimated OH by less than 2.0 cm, except when using the ulna length (2.6 cm among girls and 3.4 m among boys). The average absolute prediction error for BMI was < 5 %, except for the ulna length, and the Kappa coefficient was > 0.7.
In our sample, the equations of Gauld et al. were adequate to predict height and estimate BMI. The greatest difference between observed height and predicted height was observed when using the ulna length.
当由于儿童的病情无法测量身高或身高不能反映其实际骨骼生长情况时，可使用基于身体各部位的公式进行估算。
选取无肌肉骨骼病变的儿童和青少年样本。记录身高、臂展、尺骨长度、前臂长度、胫骨长度、腿部长度、体重和青春期发育情况。估算BMI。使用布兰德-奥特曼方法和组内相关系数分析OH和PH之间的差异与一致性。对于BMI，使用卡帕系数估计绝对预测误差和一致性。
纳入了220名年龄在6.04至19.1岁之间的儿童和青少年。在所有公式中，PH与OH之间的组内相关系数均>0.9。平均而言，PH高估OH不到2.0厘米，但使用尺骨长度时除外（女孩高估2.6厘米，男孩高估3.4厘米）。BMI的平均绝对预测误差<5%，尺骨长度除外，卡帕系数>0.7。
在我们的样本中，高尔德等人的公式足以预测身高和估算BMI。使用尺骨长度时，观察身高与预测身高之间的差异最大。
