Data from a cross-sectional study of fifth grade children in a sample of primary schools in Belgium that differ in amount of greenness at school and landscape level

The data in this deposit were collected as part of the B@SEBALL project (Biodiversity at School Environments - Benefits for All). The project investigated how biodiversity in the school environment can positively affect children’s health and mental well-being. B@SEBALL also investigated the opportunities for reducing health inequalities among children via biodiversity at school environments. The data are organized according to the Frictionless Data Package standard. All child-level and school-level data have been anonymized. Each data package is a collection of csv files and a json file. The json file holds descriptive information for all variables in all csv files. The zip file contains two frictionless data packages. The data packages contain information on 37 primary schools and 513 children. The data package, data_package_an_zenodo_cleaned_data, contains the original data in a tidied and cleaned format. It consists of 46 csv files. The files relate to the following contents: contents filename metadata file datapackage.json landscape level variables wp1_landscape_level_data.csv metadata about participants wp2_participants_metadata.csv general school level data wp2_school_data.csv pollution data at school level wp3_ua_sirm_data.csv classroom data about air quality wp3_ucl_classroom_airquality.csv area of ecotopes in the school environment wp3_ucl_ecotope_categories.csv greenness indicators for the school environment derived from ecotopes wp3_ucl_greenness_indicators.csv greenness indicators for the school environment derived from ecotopes wp3_ucl_greenness_key.csv greenness indicators for the school environment derived from ecotopes wp3_ucl_greenpatches.csv playground biodiversity indicators wp3_ucl_playground_biodiversity.csv d2-test of attention data wp4_d2_data_by_child.csv d2-test of attention data wp4_d2_data_by_line.csv d2-test of attention data wp4_d2_data_by_linegroup.csv Self-reported allergy data wp4_isaac_data.csv Self-reported allergy data wp4_isaac_questions.csv Self-reported well-being data wp4_kidscreen_data.csv Self-reported well-being data wp4_kidscreen_questions.csv Self-reported attitude toward outdoor play wp5_atop_data.csv Self-reported attitude toward outdoor play wp5_atop_questions.csv Guardian-reported general questions wp5_guardians_general_questions_data.csv Guardian-reported general questions wp5_guardians_general_questions_key.csv Guardian-reported protection from risk wp5_guardians_risk_protection_data_part1.csv Guardian-r