Basic information to be incorporated into the article
| Author | Total | Age | Time frame | Data from | Study design | Diet recording method | Disease diagnosis | Type of diet |
| Jarach et al, 202321 | 383 | 40–65 | 2016–2019 | The Mario Negri Institute in Milan (Italy), Monza e Brianza, Italy | Case control | Self-designed questionnaire | Interviewer administered a questionnaire and the Italian-validated version of the tinnitus handicap inventory | Coffee, eggs, butter, meat, fish, cheese, fruit, vegetable, varied diet, dairy, milk |
| Tang 2022 | 1217 | >50 | 1997–2009 | Blue Mountains Hearing Study | Cohort | Semiquantitative food frequency questionnaire, FFQ | Audiologist-administered questionnaire | Dietary flavonoids |
| Tang et al, 202118 | 1730 | >50 | 1997–2009 | Blue Mountains Hearing Study | Cohort | Semiquantitative food frequency questionnaire, FFQ | Audiologist-administered questionnaire | Carbohydrate, sugar, fibre, fruit, vegetable |
| Dawes et al, 202016 | 34 576 | 30–69 | 2006–2010 | UK Biobank resource (Collins 2012). | Cross-sectional | Dietary assessment was based on the Oxford Web-Q | An epidemiological method of hearing investigation | Fibre, fat, sugar |
| Lee et al, 201923 | 3575 | 40–64 | 2012–2013 | The sixth Korea National Health and Nutrition Examination Survey (KNHANES) | Cross-sectional | Food-frequency questionnaire (FFQ) | Self-designed questionnaire | Chocolate |
| Lee 2018 | 7621 | 40–80 | 2013–2015 | The sixth Korea National Health and Nutrition Examination Survey (KNHANES) | Cross-sectional | Diet was assessed with a semiquantitative food-frequency questionnaire | Self-designed questionnaire | Water, protein, fat, carbohydrate, fibre |
| Lee 2018 | 13 448 | >19 | 2009–2012 | The sixth Korea National Health and Nutrition Examination Survey | Cross-sectional | Food-frequency questionnaire (FFQ) | Self-designed questionnaire | Coffee |
| Spankovich et al, 201725 | 2176 | 20–69 | 1999–2002 | NHANES | Cross-sectional | Dietary recall interviews were conducted during 1999–2002 the National Health and Nutrition Examination Survey (NHANES) mobile examination centre (MEC) evaluations. | Self-designed questionnaire | Fat, fruit, vegetable, meat, varied diet |
| McCormack et al, 20142 | 171 722 | 40–69 | 2006–2010 | UK Biobank resource (Collins 2012). | Cross-sectional | The UK Biobank touchscreen questionnaire | Self-designed questionnaire | Fruit, vegetable, fish, egg, sugar, coffee, dairy |
| Glicksman et al, 201426 | 65 085 | 30–44(registered) | 1991–2009 | The Nurses’ Health Study II | Cross-sectional | Extensively validated semiquantitative food frequency questionnaires | Self-designed questionnaire | Coffee |