Emotional and behavioral outcomes among youths with mental disorders during the first Covid lockdown and school closures in England: a large clinical population study using health care record integrated surveys.

"Declarations Conflict of interestAuthors have no competing interests to declare. Ethical approvalThe survey was launched at three time points during the pandemic as part of patient monitoring activities under the UK legal framework of Regulation 3(2)/3(3) of the Health Service Control of Patient Information 2002 (COPI). Extraction and analysis of deidentified clinicodemographic data were carried out using the Clinical Record Interactive Search (CRIS) platform and security model. Overarching ethical approval for secondary data analysis of deidentified data using CRIS was granted by the Oxford Research Ethics Committee C (08/H0606/71 + 5) [23], and this specific project was approved by an oversight committee (N. 20-040, https://projects.slam.nhs.uk/research/cris/cris_projectsdetails?ID=1495). Consent to participateCaregivers and young people themselves (with parental consent if below 16) were invited to complete the survey. Consent to publishNot applicable. Conflict of interest Authors have no competing interests to declare."

"Funding The present work was funded by a King’s together Grant to ES, JD and SV and funding from the South London and Maudsley NHS Foundation Trust CAMHS Directorate. ES is supported by the NIHR Biomedical Research Centre (BRC) at SLaM NHS Foundation Trust (IS‐BRC‐1215‐20018), the NIHR through a program grant (RP‐PG‐1211‐20016) and Senior Investigator Award (NF‐SI‐0514‐10073 and NF‐SI‐0617‐10120), the European Union Innovative Medicines Initiative (EU‐IMI 115300), Autistica (7237) MRC (MR/R000832/1, MR/P019293/1), the Economic and Social Research Council (ESRC 003041/1) and GSST Charity (GSTT EF1150502) and the Maudsley Charity. JD is supported by NIHR Clinician Science Fellowship award (CS‐2018‐18‐ST2‐014) and has received support from a Medical Research Council (MRC) Clinical Research Training Fellowship (MR/L017105/1) and Psychiatry Research Trust Peggy Pollak Research Fellowship in Developmental Psychiatry. VP is recipient of a Clinical Lectureship funded by the Department of Child and Adolescent Psychiatry, IoPPN, KCL; and of the Starter Grant for Clinical Lecturers, which is supported by Academy of Medical Sciences (AMS), the Wellcome Trust, the Medical Research Council (MRC), the British Heart Foundation, Versus Arthritis, Diabetes UK, the British Thoracic Society (Helen and Andrew Douglas bequest), and the Association of Physicians of Great Britain and Ireland (AoP) [SGL024\1092]."