Duran A C F L, Florindo A A, Jaime P C
Department of Nutrition, School of Public Health, University of São Paulo, São Paulo, Brazil.
Int J STD AIDS. 2012 Apr;23(4):e1-6. doi: 10.1258/ijsa.2009.009344.
To assess the reliability and validity of self-reported height and weight in adults living with HIV/AIDS (ALWHA) we assessed 508 ALWHA of both genders on antiretroviral therapy. Height and weight were directly measured in a subsample. Sensitivity and specificity analysis were performed to determine the validity of self-reported measures. Bland-Altman's method was used to calculate the limits of agreement between values while reliability was assessed using intraclass coefficients. Regression equations were devised to determine actual measures from self-reported values. Mean differences among measured and self-reported weight were -0.96 kg for men and -0.54 kg for women. Mean height differences were less than 2 cm, yielding good reliability for body mass index (BMI). Overweight (BMI ≥ 25 kg/m(2)) diagnosis sensitivity was 90.6% and specificity was 81.2%. Corrected measures determined by regression equations had stronger correlation with self-reported values (r > 0.980). Self-reported height and weight showed good reliability and validity compared with directly measured height and weight. However, measures should be corrected whenever possible to achieve higher accuracy.
为评估艾滋病毒/艾滋病成年患者（ALWHA）自我报告的身高和体重的可靠性与有效性，我们对508名接受抗逆转录病毒治疗的男女ALWHA进行了评估。对一个子样本直接测量了身高和体重。进行了敏感性和特异性分析以确定自我报告测量值的有效性。采用布兰德-奥特曼方法计算数值之间的一致性界限，同时使用组内系数评估可靠性。设计了回归方程以根据自我报告值确定实际测量值。男性测量体重与自我报告体重的平均差异为-0.96千克，女性为-0.54千克。平均身高差异小于2厘米，体重指数（BMI）具有良好的可靠性。超重（BMI≥25千克/平方米）诊断的敏感性为90.6%，特异性为81.2%。通过回归方程确定的校正测量值与自我报告值具有更强的相关性（r>0.980）。与直接测量的身高和体重相比，自我报告的身高和体重显示出良好的可靠性和有效性。然而，应尽可能进行校正测量以实现更高的准确性。
