Alasdair D Henderson, Ben Fc Butler-Cole, John Tazare, Laurie A Tomlinson, Michael Marks, Mark Jit, Andrew Briggs, Liang-Yu Lin, Oliver Carlile, Chris Bates, John Parry, Sebastian Cj Bacon, Iain Dillingham, William A Dennison, Ruth E Costello, Yinghui Wei, Alex J Walker, William Hulme, Ben Goldacre, Amir Mehrkar, Brian MacKenna, Emily Herrett, Rosalind M Eggo
Clinical coding of long COVID in primary care 2020-2023 in a cohort of 19 million adults: an OpenSAFELY analysis
EClinicalMedicine
evaluating food consumption schoolaged children crucial monitor dietary habits promote targeted interventions contribute public policies aimed healthy eating context objective develop validate illustrated questionnaire food consumption brazilian schoolchildren quaceb 6 10 years old selfreported illustrated recall validity obtained four stages follows selection foods validation items validation illustrations pretest foods selected considering data main surveys conducted brazilian population schoolchildren recent years degree food processing main foods countrys five macroregions content items validated comparing childrens parents responses questionnaire published online format 6 10yearold elementary schoolchildren recruited using snowball technique first part questionnaire answered parent childs lunch second completed child following day thirtytwo parent child dyads participated sensitivity specificity area curve auc kappa k tests performed 30 foods presented questionnaire 15 reported consumed high sensitivity mean 885 high specificity average 920 substantial agreement k 078 low disagreement 62 auc 090 found illustrations validated focus group fourthgrade children school chosen convenience food illustrations designed children asked name food eighteen children participated verified images representative foods pretest three schools chosen convenience announced link online questionnaire whatsapp groups parents students first fifth grade fifteen children answered questionnaire 867 n 13 judged excellent good thus food consumption questionnaire valid elementary schoolchildren 6 10 years old applied research assess dietary patterns children brazil