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%) |