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Table 2 Sample MEDLINE search strategy

From: Socio-ecological influences on adolescent (aged 10–17) alcohol use and linked unhealthy eating behaviours: protocol for a systematic review and synthesis of qualitative studies

1. exp. Alcohol Drinking/  
2. exp. alcoholic beverages/  
3. alcoholic intoxication/  
4. (alcohol* adj2 (abuse* or misuse* or use* or consum* or drink* or excess* or problem* or risk*)).mp.  
5. alcohol*.mp.  
6. ((binge or problem* or risk* or excess*) adj2 drink*).mp.  
7. ((hazardous or unsafe or unhealthy) adj2 drink*).mp.  
8. drunk*.mp.  
9. (intoxicat* adj4 (drink* or alcohol*)).mp.  
10. (wine or beer or spirits).mp.  
11. exp. overweight/  
12. exp. overnutrition/or hyperphagia/  
13. exp. “Body Weights and Measures”/  
14. Food preferences/  
15. *Feeding Behaviour/or exp. Food habits/  
16. Energy Intake/  
17. fast foods/or carbonated beverages/  
18. (obes* or over?weight or over?nutrition).ti,ab.  
19. (excess adj2 weight).ti,ab.  
20. ((eat* or food* or feed*) adj2 (behavio?r* or excessive* or choice? or pattern? or habit? or intake? or preference?)).ti,ab.  
21. (body adj2 (mass or size or weight)).ti,ab.  
22. (diet* or nutrition).ti,ab.  
23. over?eat*.mp.  
24. (under?weight or under?nutrition or under?eat).ti,ab.  
25. (unhealth* adj2 (diet* or eating or food*)).mp.  
26. ((vegetable* or fruit) adj2 (eat* or intake or consum* or portion* or serving? or frequenc* or number? or preference? or choice*)).mp.  
27. (((junk or fast or unhealthy or choice? or processed) adj2 food*) or fastfood).mp.  
28. (calorie-dense adj2 (food? or beverage? or drink?)).mp.  
29. (convenien* adj2 (food* or meal*)).mp.  
30. (excess* adj2 (fat* or salt* or sugar*)).mp.  
31. (energy adj1 intake).mp.  
32. (poor adj2 diet).mp.  
33. snack*.mp.  
34. calorie*.mp.  
35. (((fizzy or sugary or carbonated) adj2 drink*) or soda or coca-cola or coke or cola or pop).mp.  
36. (take?away or take?out or carry?out).mp.  
37. (((frozen or ready or TV or television) adj2 meal?) or ((TV or television) adj2 dinner?)).mp.  
38. ((portion or serving) adj2 size?).mp.  
39. or/1-38  
40. Young Adult/  
41. (young adj2 (adult? or person?)).mp.  
42. ((college* or university) adj2 student?).mp.  
43. child*.mp.  
44.under?age*.mp.  
45. late-teen*.mp.  
46. early-adult*.mp.  
47. (adolescen* or youth* or undergraduate* or freshmen or fresher? or teen* or kid* student?).mp.  
48. or/40-47  
49. exp. Interview/or interview.mp.  
50. ‘grounded theory’.mp.  
51. ethnography.mp.  
52. exp. Qualitative Research/or ‘interpretative phenomenological analysis’.mp.  
53. phenomenology.mp.  
54. exp. Focus Groups/or ‘focus group’.mp.  
55. ‘content analysis’.mp.  
56. ‘thematic analysis’.mp.  
57. ‘constant comparative’.mp.  
58. ‘participant observation’.mp.  
59. narrative*.mp.  
60. ‘field notes’.mp.  
61. or/49-60  
62. perceive.mp.  
63. perception*.mp.  
64. perspective*.mp.  
65. view.mp.  
66. experience.mp.  
67. exp. Attitude/or attitude.mp.  
68. belief*.mp.  
69. opinion.mp.  
70. feel*.mp.  
71. know*.mp.  
72. understand*.mp.  
73. or/62-72  
74. exp. Qualitative Research/or qualitative.mp.  
75. ‘qualitative analysis’.mp.  
76. ‘mixed method*’.mp.  
77. or/74-76  
78. 39 and 48 and 61 and 73 and 77  
  1. *represents the PubMed symbol for truncation