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Table 4 Participant perceptions of the study design and effects on their drinking

From: Effects of study design and allocation on self-reported alcohol consumption: randomized trial

  A (n= 1930) B (n= 1938) C (n= 1969) Total (N= 5837)
What would you say was the design of the study?     
Two separate surveys of student drinking 323 (17%) 322 (17%) 290 (15%) 935 (16%)
Following up a group of student drinkers over time 1,523 (79%) 1,515 (78%) 1,550 (79%) 4,588 (79%)
Other 84 (4.4%) 101 (5.2%) 129 (6.6%) 314 (5.4%)
After completing the survey last month did you think more about your drinking?     
No 1357 (70%) 1407 (73%) 1357 (69%) 4121 (71%)
Yes 455 (24%) 424 (22%) 500 (25%) 1379 (24%)
Don’t know 118 (6.1%) 107 (5.5%) 112 (5.7%) 337 (5.8%)
After completing the survey last month did you change your drinking?     
My drinking did not change 1493 (77%) 1535 (79%) 1532 (78%) 4560 (78%)
My drinking decreased 358 (19%) 317 (16%) 363 (18%) 1038 (18%)
My drinking increased 79 (4.1%) 86 (4.4%) 74 (3.8%) 239 (4.1%)
Was this due to taking part in the survey? (Asked of 1038 participants who said their drinking decreased)     
No 276 (77%) 251 (79%) 288 (79%) 815 (79%)
Yes 82 (23%) 66 (21%) 75 (21%) 223 (21%)