On the benefit transfer of the value of a statistical life

Yıl 2020, , 113 - 128, 31.08.2020

Shihomi Ara Aksoy

https://doi.org/10.20518/tjph.464518

Öz

Objective: International and domestic benefit transfers of the Value of a Statistical Life (VSL) are conducted and the transfer errors are examined for Turkey. Methods: For the international transfers, (1) unit-value transfer with income adjustment, (2) the method developed by ECOTEC (2001) for EU candidate counties and (3) Value of a Statistical Life (VSL) derived for Turkey by recent literature are examined. For the domestic transfers, transfer errors are compared between unit-value transfer with income adjustment and function transfer methods. Results: While the lower-bound ECOTEC estimate results in the least transfer error, the unit-value transfer with income adjustment using the lower bound OECD value is also confirmed as “Very Good Fit” transfer if the income elasticity of VSL is 2.0-2.5 for the international benefit transfer. For the domestic transfer, unit-value transfer with income adjustment with base value = 740,838 TL (in 2012 TL) and the elasticity = 0.5 resulted in “Good Fit”. When the transfer is necessary between the sites with different background risks, the function transfer with the basic demographic variables could improve the transfer results. Conclusions: We confirmed the applicability of benefit transfer practices for Turkey in both international and domestic context and identified the recommended methods of transfers together with the specific level of the income elasticities of VSL.

Anahtar Kelimeler

Value of Statistical Life, Income Elasticity of VSL, Benefit Transfer, ; Turkey

İstatistiksel yaşam değerinin fayda transferi

Öz

Amaç: Türkiye’de İstatistiksel Yaşam Değeri (İYD) için uluslararası ve ulusal fayda transferleri yapılmakta ve transfer hataları incelenmektedir. Yöntem: Uluslararası transferler için, (1) gelir ayarlamalı birim değer transferi, (2) AB aday ülkeleri için ECOTEC (2001) tarafından geliştirilen yöntem ve (3) Türkiye için yakın zamanda türetilen İYD incelenmektedir. Ulusal transferlerde, gelir ayarlamalı birim değer transferi ve fonksiyon transferi yöntemleri arasında transfer hataları karşılaştırılmaktadır. Bulgular: Uluslararası fayda transferi için alt sınır ECOTEC tahmini en az transfer hatasıyla sonuçlanırken, İYD'nin gelir esnekliği 2.0-2.5 aralığında olduğunda, alt sınır OECD değeri kullanılarak gelir ayarlamalı birim değer transferi de “Çok İyi Uyum” transferi olarak doğrulanmaktadır. Ulusal transfer ise, gelir ayarlamalı birim değer transferi baz değeri = 740.838 TL (2012 TL) ve esneklik = 0.5 ile “İyi Uyum” sağlanmaktadır. Farklı mevcut riskleri olan bölgeler arasında transfer gerektiğinde, temel demografik değişkenlerle fonksiyon aktarımı transfer sonuçlarını iyileştirebilmektedir. Sonuç: Türkiye için fayda transferi uygulamalarının hem uluslararası hem de ulusal bağlamda uygulanabilirliği doğrulanmış ve İYD'nin gelir esnekliklerinin belirli düzeyleri ile birlikte önerilen transfer yöntemleri belirlenmiştir.

Anahtar Kelimeler

İstatistiksel Yaşam Değeri, fayda transferi, İYD'nin gelir esnekliği, Türkiye

Kaynakça

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