R Ahmadian, I Ercan, D Sigirli, A Yildiz. Combining binary and continuous biomarkers by maximizing the area under the receiver operating characteristic curve. Communications in Statistics-Simulation and Computation, 1-14

R Ahmadian, Y Uncu, I Ercan. Turkey in Between European Union Countries in the New Coronavirus (COVID-19) Outbreak; An Examination of the Doubling Times. Türkiye Klinikleri. Tip Bilimleri Dergisi 40 (2), 220-227.

R Ahmadian ., & Ercan, I. (2021). Evaluating the sensitive question methods; recommended Uludag Adjustment for the Crosswise Model. Communications in Statistics-Simulation and Computation, 1-14.

R Ahmadian, OCAKOGLU G. Study designs in biomarker research. Eur Res J 2017;3(2):106-110, 2017.

Demirtas, H., Ahmadian, R., Atis, S., Can, F. E., & Ercan, I. (2016). A nonnormal look at polychoric correlations: Modeling the change in correlations before and after discretization. Computational Statistics, 31(4), 1385-1401.

BD Cakmak, B Dundar, AS Acikgoz, G Ozgen, T Cift, R Ahmadian .The relationship between maternal and umbilical cord adropin levels with the presence and severity of preeclampsia. Journal of perinatal medicine 45 (7), 879-885

Ozarda, Y., Ichihara, K., Jones, G., Streichert, T., & Ahmadian, R. (2021). Comparison of reference intervals derived by direct and indirect methods based on compatible datasets obtained in Turkey. Clinica Chimica Acta.

A Yabacı, İ Ercan, R Ahmadian, F Kesin, FE Can. Tıpta Uzmanlık Tezlerinde Yapılan İstatistiksel Hataların Değerlendirilmesi. İncelemede.