MEZUNİYET SÜRELERİNİ ETKİLEYEN FAKTÖRLERİN YAŞAM ÇÖZÜMLEMESİ İLE İNCELENMESİ

Yıl 2018, Cilt: 16 Sayı: 1, 649 - 664, 31.03.2018

Hatice Işık Nihal Ata Tutkun , Durdu Karasoy

Öz

Öz; Sağlık bilimlerinde kullanımı
yaygın olan yaşam çözümlemesinin sosyal bilimlerdeki kullanımı son yıllarda
önem kazanmıştır.  İşletme, ekonomi,
eğitim gibi alanlarda uygulamaları görülmektedir. Eğitim alanında öğrencilerin
mezuniyet süreleri ya da belli bir konuyu kavrama süreleri gibi konularda yaşam
çözümlemesi yöntemlerinden yararlanılmaktadır. Bu çalışmada Hacettepe
Üniversitesi İstatistik Bölümü’den 1967 yılından 2015 yılına kadar mezun olan
3182 öğrencinin mezuniyet süreleri ve etkilediği düşünülen faktörler
incelenmiştir. Normal süresi içinde eğitimini tamamlamayanlar başarısız gözlem
olarak nitelendirilmiştir. Kaplan-Meier yaşam olasılıkları ve Tarone-Ware testi
sonuçları elde edilmiştir. Yarı
parametrik bir yöntem olan Cox regresyon modeli uygulanmış,  ancak modelin varsayımı olan orantılı
tehlikeler varsayımı sağlanmadığından kullanılamamıştır. Bu modele alternatif
olan hızlandırılmış başarısızlık süresi modelleri ve sonrasında da zayıflık
modeli uygulanmıştır. Veri için en uygun modelin zayıflık terimi içeren log-lojistik
hızlandırılmış başarısızlık süresi modeli olduğu görülmüştür. Bu modele göre
akademik ortalama (p-değeri=0.007), 
İngilizce hazırlık (p-değeri=0.003) ve tercih sırası (p-değeri=0.001)
değişkenleri mezuniyet sürelerini etkileyen önemli faktörler olarak belirlenmiştir.

Anahtar Kelimeler

Cox regresyon modeli, durdurma, hızlandırılmış başarısızlık süresi modelleri, mezuniyet süresi, zayıflı

Kaynakça

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