Fernandes C M, Clark S, Price A, Innes G
Department of Emergency Medicine, St Paul's Hospital, Vancouver, BC.
Can Fam Physician. 1999 Oct;45:2373-6.
To assess the accuracy of estimates of patients' weight made by physicians, nurses, and patients themselves in emergency departments.
Observational prospective study.
Tertiary referral centre in Vancouver, BC.
Eleven attending physicians, 26 nurses, and a convenience sample of 117 patients.
Patients themselves, attending physicians, and nurses independently estimated the weight of 117 patients. An investigator weighed each patient.
Mean error was determined by subtracting actual weight from estimated weight and dividing by actual weight; 95% confidence intervals (CI) were calculated.
Mean error in estimates was 3.1% (95% CI 2.7 to 3.5) for patients, 8.4% for nurses (CI 7.6 to 9.2), and 8.1% (CI 7.1 to 9.1) for physicians. Weight was estimated within 5% of actual weight by 32% of nurses, 39% of physicians, and 82% of patients. Weight was estimated within 10% of actual weight by 66% of nurses, 66% of physicians, and 97% of patients. Estimates out by more than 15% were made by 11% of nurses, 16% of physicians, and 1% of patients.
Patient estimates were most accurate. Physician and nurse estimates were unreliable.
评估急诊科医生、护士及患者本人对患者体重估计的准确性。
观察性前瞻性研究。
不列颠哥伦比亚省温哥华的三级转诊中心。
11名主治医生、26名护士以及117名患者的便利样本。
患者本人、主治医生和护士分别独立估计117名患者的体重。一名研究人员对每位患者进行称重。
平均误差通过用估计体重减去实际体重再除以实际体重来确定；计算95%置信区间（CI）。
患者估计的平均误差为3.1%（95%CI 2.7至3.5），护士为8.4%（CI 7.6至9.2），医生为8.1%（CI 7.1至9.1）。32%的护士、39%的医生以及82%的患者对体重的估计在实际体重的5%以内。66%的护士、66%的医生以及97%的患者对体重的估计在实际体重的10%以内。11%的护士、16%的医生以及1% 的患者对体重的估计误差超过15%。
患者的估计最准确。医生和护士的估计不可靠。
