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    Body mass index percentile curves for predominantly breastfed childrenaged 0 2 years from Ankara Turkey
    (Bratıslava Medıcal Journal-Bratıslavske Lekarske Lısty, 2011) Halisdemir, Nurhan; Çolak, Cemil; Çamurdan A. D.; Ergöçen, S.; Şahin, Figen; Elhan, Atilla Halil
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    Clinical characteristics of Graves' disease following COVID-19 infection or vaccination: a multicenter case-control study
    (Tubitak Scientific & Technological Research Council Turkey, 2025) Gokcay Canpolat, Asena; Agbaht, Kemal; Elhan, Atilla Halil; Cesur, Mustafa; Alphan Uc, Ziynet; Akcay, Seckin; Iliksu Gozu, Hulya
    Background/aim: To describe Graves' Disease (GD) associated with COVID-19 infection (COVID) or its vaccines (VAC) and to compare the clinical presentations, laboratory parameters, and short-term clinical course of the disease among different etiology groups (COVID, VAC, and GD control). Materials and methods: Included in this multicenter matched case-control, retrospective cohort study were 239 patients with newly diagnosed (n = 196) or recurrent GD (n = 43) associated with COVID (n = 79) or VAC (n = 160). Each case was matched (1:1) with a control who had been diagnosed with GD prior to COVID. Results: The median age of the entire group was 42 years (female:male = 137:102). Both the COVID (4.6-fold) and VAC (4.1-fold) groups demonstrated higher TSH receptor antibody (TRAb) titers (p < 0.001) compared with the control group (3.5-fold), as well as a higher proportion of recurrent cases. At baseline, the COVID group had higher free triiodothyronine (fT3) levels than the other groups. Graves orbitopathy (GO) was observed in 60 patients (12.6%), with a higher frequency in classical GD (18.4%). At baseline, the variables associated with thyrotoxicosis severity (defined as fT3 levels) were younger age, higher thyroid gland volume (TGV), and etiology, with the COVID and, to a lesser extent, VAC groups presenting with higher fT3 levels. The variables associated with GO were higher TGV, TRAb titers, and smoking, while no association with etiology was identified. Conclusion: The clinical course was similar in all groups other than in some laboratory findings. Although the frequency of GO associated with COVID and VAC was lower, the proportion of cases with a Clinical Activity Score of >= 3 was higher compared to GD. This pattern suggests a potentially stronger immunologic trigger in these cases.
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    Updated weight and height for age centiles in a group of predominantlybreastfed turkish children aged 0 2 years
    (Turkiye Klinikleri J Med Sci 2009;29(6):1376-85, 2009) Çolak, Cemil; Çamurdan, Aysu Duyan; Ergöçen, Salih; Elhan, Atilla Halil; Şahin, Figen
    Objective: To update the weight and height centiles for a group of predominantly breastfed children aged 0-2 years from the medium-high socioeconomic status living in Ankara. Material and Methods: The study design was prospective cohort. Between 2002 and 2004, height and weight measurements of 0-2 year-old healthy children from the medium-high socioeconomic status were recorded in definite time-intervals in the Healthy Child Clinic of Gazi University Faculty of Medicine. Height and weight percentile curves were constructed using the LMS method for boys and girls. Results: In height and weight percentile curves, a steady upward trend was detected until 24 months of age for each gender. The estimated 50th percentiles of height and weight were mostly higher than the 50th percentiles suggested by the World Health Organization (WHO) 2006 and Neyzi 1978. The 50th height and weight percentiles of the present study were closer to those of WHO than those of Neyzi. Conclusion: The present study reports the updated percentile values and curves for height and weight in a group of predominantly breastfed children aged 0-2 years from the medium-high socioeconomic status in Ankara. However, since the obtained data does not represent the whole country, it may be more reasonable to use the updated WHO multicenter growth reference curves.
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    Updated weight and height for age centiles in a group of predominantlybreastfed Turkish children aged 0 2 years
    (Türkiye Klinikleri Tıp Bilimleri Dergisi, 2009) Çolak, Cemil; Duyan Çamurdan, Aysu; Ergöçen, Salih; Elhan, Atilla Halil; Şahin, Figen
    ABS TRACT Ob jec ti ve: To update the weight and height centiles for a group of predominantly breastfed children aged 0-2 years from the medium-high socioeconomic status living in Ankara. Material and Methods: The study design was prospective cohort. Between 2002 and 2004, height and weight measurements of 0-2 year-old healthy children from the medium-high socioeconomic status were recorded in definite time-intervals in the Healthy Child Clinic of Gazi University Faculty of Medicine. Height and weight percentile curves were constructed using the LMS method for boys and girls. Results: In height and weight percentile curves, a steady upward trend was detected until 24 months of age for each gender. The estimated 50th percentiles of height and weight were mostly higher than the 50th percentiles suggested by the World Health Organization (WHO) 2006 and Neyzi 1978. The 50th height and weight percentiles of the present study were closer to those of WHO than those of Neyzi. Conclusion: The present study reports the updated percentile values and curves for height and weight in a group of predominantly breastfed children aged 0-2 years from the medium-high socioeconomic status in Ankara. However, since the obtained data does not represent the whole country, it may be more reasonable to use the updated WHO multicenter growth reference curves.