Journals / Romatizma Dergisi / 2007 / Cilt: 22 - Sayı: 2

Performance of risk assessment indices for the prediction of postmenopausal osteoporosis

Postmenopozal osteoporozun tahmininde risk değerlendirme indekslerinin performansı

Pages
48–54
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was concluded that the OST index could be preferred in clinical practice due to its ease of application.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: To evaluate the performance of osteoporosis risk assessment indices in identifying women with osteoporosis.
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Key Findings & Data:Patients and Methods: One-hundred eighty-six postmenopausal women aged 45 years and older were included in the study.
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Conclusion & Impact:It was concluded that the OST index could be preferred in clinical practice due to its ease of application.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Kemik yoğunluğu · Osteoporoz · postmenopozal

Abstract

Objective: To evaluate the performance of osteoporosis risk assessment indices in identifying women with osteoporosis. Patients and Methods: One-hundred eighty-six postmenopausal women aged 45 years and older were included in the study. The subjects were evaluated in terms of the risk for osteoporosis by using Osteoporosis Screening Tool (OST), Simple Calculated Osteoporosis Risk Estimation (SCORE), Osteoporosis Risk Assessment Instrument (ORAI), and Osteoporosis Index of Risk (OSIRIS). Bone mineral densities (BMD) at the lumbar spine and the proximal femur were measured by dual energy X-ray absorptiometry (DXA). The performance of indices in identifying subjects with osteoporosis (T-score &#8805; -2.5) at the L2-4 spine or the femoral neck were evaluated using Receiver Operating Characteristic analysis and the areas under the curve (AUC) were calculated. Results: When the defined cut-off values (<2 for OST, >7 for SCORE, >8 for ORAI and <1 for OSIRIS) were used to send the patients for DXA testing, the sensitivity of the risk indices to identify osteoporosis at the femoral neck ranged from 72% to 86%, the specificity from 38% to 54%. At the lumbar spine, these values ranged from 58% to 73% for sensitivity and from 38% to 53% for specificity. The AUC values of indices ranged from 0,718 to 0,733 for osteoporosis at the femoral neck and from 0,541 to 0,579 for osteoporosis at the lumbar spine. Conclusion: It was observed that all four indices showed similar performance for identifying women with osteoporosis, and were more effective for identifying femoral neck osteoporosis. Utilization of these indices, because of their high negative predictive values, provide safe exclusion of healthy women who have a normal BMD and do not need a DXA testing, thus saving the DXA cost. It was concluded that the OST index could be preferred in clinical practice due to its ease of application.

Özet

Amaç: Osteoporotik kadınları saptamada osteoporoz risk değerlendirme indekslerinin performanslarını değerlendirmek. Hastalar ve Yöntem: 45 yaş ve üzeri 186 postmenopozal kadın çalışmaya alındı. Olgular Osteoporoz Tarama Aracı [Osteoporosis Screening Tool (OST)], Basit Hesaplanan Osteoporoz Risk Tahmini [Simple Calculated Osteoporosis Risk Estimation (SCORE)], Osteoporoz Risk Değerlendirme Aracı [Osteoporosis Risk Assessment Instrument (ORAI)] ve Osteoporoz Risk İndeksi [Osteoporosis Index of Risk (OSIRIS)] kullanılarak osteoporoz riski açısından değerlendirildi. Dual enerji X-ray absorbsiyometri (DXA) ile lomber bölge ve proksimal femur kemik mineral yoğunlukları (KMY) ölçüldü. İndekslerin L2-L4 omurga veya femur boynunda osteoporozlu (T skor ≥ -2.5) olguları saptamadaki performansları Algı layıcı İşletim Eğrisi (Receiver Operating Characteristic) analizi kullanılarak değerlendirildi ve eğri altındaki alan [area under the curve (AUC)] hesaplandı. Bulgular: Hastaları DXA tetkikine göndermek için saptanmış eşik değerler (OST için 7, ORAI için >8 ve OSIRIS için <1) kullanıldığında, risk indekslerinin femur boynu osteoporozunu saptamada duyarlıkları %72-%86, özgüllükleri %38-%54 arasında iken, bu değerler lomber omurga osteoporozu için sırası ile %58-%73 ve %38-%55 arasındaydı. İndekslerin AUC değerleri femur boynu osteoporozu için 0.718-0.733, lomber omurga osteoporozu için ise 0.541-0.579 arasındaydı. Sonuç: Osteoporotik kadınları saptamada dört risk indeksinin de benzer performans gösterdikleri ve femur boynu osteoporozunu saptamada daha etkin oldukları gözlenmiştir. Negatif kestirim değerlerinin yüksek olması nedeniyle, bu indekslerin kullanılması, normal KMY'ye sahip DXA tetkiki gerektirmeyen sağlıklı kadınların emniyetli bir şekilde dışlanmasını ve DXA maliyetlerinin azaltılmasını sağlayacaktır. OST indeksinin kolay uygulanabilir olması nedeniyle klinik pratikte tercih edilebileceği sonucuna ulaşılmıştır.

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Cite This Article

GÜNAYDIN, R., KARATEPE, A. G., KAYA, T., KARLIBAŞ, U. (2007). Performance of risk assessment indices for the prediction of postmenopausal osteoporosis. Romatizma Dergisi, Cilt: 22 - Sayı: 2, 48–54. https://ajindex.com/articles/305968

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