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Table 4 Codes and categories deriving from responses to question 8 of the first online survey

From: Co-creating a local environmental epidemiology study: the case of citizen science for investigating air pollution and related health risks in Barcelona, Spain

  Codes (n)b
Health-related outcomes (44)
 Overall health (39) Degenerative diseases (2)
 Respiratory system (30) Emotions (2)
 Cancer (16) Food/Nutrition (2)
 Life expectancy (12) Happiness (2)
 Mental health (12) Tumor (2)
 Stress (11) Anxiety (1)
 Development (9) Blood (1)
 Allergies (8) Bones (1)
 Brain (7) Chronic disease (1)
 Fertility/Reproductive (7) Digestive system (1)
 Mortality (7) Endocrine system (1)
 Quality of life (7) Genetic (1)
 Skin (7) Hair (1)
 Ageing (6) Headache (1)
 Cardiac system (6) Hormonal system (1)
 Mood (4) Inflammation (1)
 Neuro (4) Irritability (1)
 Concentration (3) Metabolism (1)
 Immune system (3) School performance (1)
 New health topics (3) Tiredness (1)
 Asthma (2) Urine (1)
 Cognition (2) Well being (1)
Exposure assessment (8)
 Mitigation measures (85) Schools (5)
 Sources (34) Atmospheric conditions (1)
 Pollutants (15) House (1)
 Urban features (6) Noise (6)
Target population groups (13)
 Children (46) Asthmatic and allergic people (1)
 All groups (11) Pedestrians (1)
 Pregnant women (9) People with respiratory problems (1)
 Elderly people (5) Sportsmen (1)
 Animals (2) Students (1)
 Cyclists (2) Women (1)
 Healthy people (2)   
Study design (14)
 Comparison (32) Impact evaluation (2)
 Long term (14) Individual level (2)
 Direct (unmediated) (9) City level (1)
 Cohort studies (4) Independent (1)
 Short term (3) Local level (1)
 Time (day) of exposure (4) Interdisciplinarity (1)
 Expert opinion (2) National scale (1)
Advocacy (3)
 Political changes (9) Bottom-up initiatives (1)
 Visibility (5)   
  1. aTotal number of codes
  2. bTotal number of times code is repeated. Question what about what citizens would like to investigate about air pollution and health. The coding was based on a total of 452 responses