SEÇİLMİŞ OECD ÜLKELERİ SAĞLIK HARCAMALARININ ABD’YE YAKINSAMASI: DALGACIK TABANLI FOURİER BİRİM KÖK TESTLERİ UYGULAMASI

Year 2025, Volume: 21 Issue: 3, 1047 - 1079, 30.09.2025

Zerrin Dürrü

Abstract

Sağlık, dünya ekonomisindeki en büyük sektörlerden birisi olarak payını almakta ve önemi giderek artmaktadır. Son otuz yıldan daha fazla süredir çoğu gelişmiş ülkede sağlık harcamalarında keskin ve sürekli bir hızlı artış eğilimi dikkat çekmektedir. Bu hızlı artışta özellikle yüksek gelirli ülkeler payını almakta iken, en yüksek payı alan ülke Amerika Birleşik Devletleri’dir. Bu çalışmanın amacı ise, 1972-2022 arası dönemde gayri safi yurtiçi hasıladan toplam sağlık harcamalarına ayırdıkları yıllık ortalama payı yüksek olan Avustralya, Kanada, Almanya, Hollanda, Yeni Zelanda, Norveç, İsveç, İsviçre, Birleşik Krallık gibi yüksek gelirli seçilmiş OECD ülkelerinin hem seçilmiş OECD içinde hem de dünya çapında en fazla sağlık harcaması yapan ABD’ye yakınsamasını serilerdeki yumuşak yapısal değişiklikleri ve frekans bileşenlerini dikkate alan dalgacık tabanlı doğrusal ve doğrusal olmayan yeni Fourier birim kök testleri ile araştırmaktır. Araştırmanın bulguları toplam sağlık harcamalarında Kanada ve Birleşik Krallık'ın ABD'ye yakınsadığını, Avustralya, Almanya, Norveç, İsveç ve İsviçre, Hollanda ve Yeni Zelanda’nın ise ABD'den ıraksadığını göstermektedir.

Keywords

Sağlık Harcamaları , OECD Ülkeleri , Dalgacık Birim Kök Testi , Fourier Fonksiyon , Stokastik Yakınsama

CONVERGENCE OF HEALTH EXPENDITURES OF SELECTED OECD COUNTRIES TO THE UNITED STATES: APPLICATION OF WAVELET-BASED FOURIER UNIT ROOT TESTS

Abstract

Health is one of the largest sectors in the world economy and its importance is increasing. For more than the last thirty years, there has been a sharp and continuous rapid increase in health expenditures in generel most developed countries. High-income countries in particular have a share in this rapid increase, with the United States of America having the highest share. The aim of this study is to investigate the convergence of high-income OECD countries such as Australia, Canada, Germany, Netherlands, New Zealand, Norway, Sweden, Switzerland and United Kingdom, which have a high annual average share of gross domestic product allocated to total health expenditures, to the United States, which has the highest health expenditure both within the selected OECD and worldwide, with wavelet-based linear and non-linear new Fourier unit root tests that take into account the smooth structural changes and frequency domain in the series. The findings of the study indicate that Canada and the United Kingdom converge to the USA in total health expenditures, while Australia, Germany, Norway, Norway, Sweden and Switzerland, the Netherlands and New Zealand diverged from the USA.

Keywords

Health Expenditures , OECD countries , Wavelet unit root test , Fourier function , Stochastic Convergence

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