hrp0098p1-6 | Adrenals and HPA Axis 1 | ESPE2024

Impact of Fludrocortisone on Blood Pressure in Young Children Under 5 with CAH in the I-CAH Registry: Autoregressive Causal Inference Analysis

R. Lawrence Neil , Bacila Irina , Tonge Joseph , Dawson Jeremy , S. Collins Gary , Lang Zi-Qiang , Bryce Jillian , Alimussina Malika , Chen Minglu , R. Ali Salma , Adam Safwaan , L.T. van den Akker Erica , A.S.S. Bachega Tânia , Baronio Federico , H. Birkebæk Niels , Bonfig Walter , Claahsen–van der Grinten Hedi , Cools Martine , C. Costa Eduardo , Debono Miguel , de Vries Liat , Flück Christa , Gazdagh Gabriella , Güven Ayla , Hannema Sabine , Iotova Violeta , J. van der Kamp Hetty , Krone Ruth , Leka-Emiri Sofia , Clemente-León María , R. Lichiardopol Corina , L. Markosyan Renata , Milenkovic Tatjana , C. Miranda Mirela , Neumann Uta , Newell-Price John , Poyrazoğlu Şükran , Probst-Scheidegger Ursina , Rey Rodolfo , Russo Gianni , De Sanctis Luisa , N. Seneviratne Sumudu , R. Stancampiano Marianna , Tadokoro-Cuccaro Rieko , Thankamony Ajay , Vieites Ana , Wasniewska Malgorzata , Yeste Diego , Tomlinson Jeremy , Faisal Ahmed S , Krone Nils

Background: The International Congenital Adrenal Hyperplasia (CAH) Registry provides rich longitudinal data from CAH patients with 21 Hydroxylase deficiency. We estimated the average total causal effect of fludrocortisone on blood pressure in patients with CAH by modelling within a causal inference framework.Methods: We constructed a directed acyclic graph (DAG) with domain experts (using Dagitty.net) to establi...

hrp0098p1-7 | Adrenals and HPA Axis 1 | ESPE2024

Variation in Blood Pressure in Young Adults with 21a-Hydroxylase Deficiency: Longitudinal Multilevel Modelling of Data from the I-CAH Registry

R. Lawrence Neil , Bacila Irina , Tonge Joseph , Dawson Jeremy , S. Collins Gary , Lang Zi-Qiang , Bryce Jillian , Alimussina Malika , Chen Minglu , R. Ali Salma , Adam Safwaan , L.T. van den Akker Erica , A.S.S. Bachega Tânia , Baronio Federico , Bonfig Walter , Claahsen-van der Grinten Hedi , Cools Martine , C. Costa Eduardo , Debono Miguel , de Vries Liat , Flück Christa , Gazdagh Gabriella , Güven Ayla , Hannema Sabine , Iotova Violeta , J van der Kamp Hetty , Krone Ruth , Leka-Emiri Sofia , Clemente-León María , R. Lichiardopol Corina , L. Markosyan Renata , Milenkovic Tatjana , C. Miranda Mirela , Neumann Uta , Newell-Price John , Poyrazoğlu Şükran , Probst-Scheidegger Ursina , Russo Gianni , De Sanctis Luisa , N. Seneviratne Sumudu , R. Stancampiano Marianna , Tadokoro-Cuccaro Rieko , Thankamony Ajay , Vieites Ana , Wasniewska Malgorzata , Yeste Diego , Tomlinson Jeremy , Faisal Ahmed S , Krone Nils

Background: Alterations in blood pressure in treated CAH due to 21 hydroxylase deficiency is contentious, with studies reporting different effects. We used data from young adults entered into the I-CAH registry to assess the change in blood pressure readings recorded within patients over time.Methods: We used longitudinal mixed effects modelling (LMEM) in R to account for repeated measures in two levels within patients a...