|Standardized T -scores of the program evaluation items in the stage groups|
|PC; n = 51||CP; n = 29||AM; n = 66||LSD contrasts|
|The questions were clearly stated.||50.71||48.80||49.98||PC, CP, AM|
|The questions were posed in logical order.||49.39||47.77||51.45||PC, CP, AM|
|The questions were easy to answer.||51.29||46.96||50.34||PC, CP, AM|
|The questionnaire was too long. 1||47.96||51.60||50.88||PC, CP, AM|
|The instructions for filling out the questionnaire were clear.||49.19||49.51||50.84||PC, CP, AM|
|The advice was relevant for me.||48.41||52.25||50.24||PC, CP, AM|
|The advice was believable.||48.24||50.02||51.35||PC, CP, AM|
|The advice was clearly arranged.||49.19||47.84||51.58||PC, CP, AM|
|The advice was informative.||47.97||49.35||51.85||PC < AM; PC, CP; CP, AM|
|The advice was clear.||48.91||48.50||51.50||PC, CP, AM|
|The advice was complete.||50.66||47.29||50.68||PC, CP, AM|
|The advice helps me to improve my drinking behavior.||47.06||56.57||49.39||PC < CP > AM; PC, AM|
|The advice stimulates me to improve my drinking behavior.||45.79||58.00||49.74||PC < CP > AM; PC < AM|
|I miss information in the advice. 1||49.99||48.00||50.89||PC, CP, AM|
|The advice was consistent with my answers.||50.11||52.50||48.82||PC, CP, AM|
|The information was interesting.||49.39||51.01||50.03||PC, CP, AM|
|The information was new to me.||49.17||51.42||50.02||PC, CP, AM|
|The pieces of advice were too long. 1||50.62||51.19||49.00||PC, CP, AM|
|The advice was confusing. 1||50.62||50.46||49.32||PC, CP, AM|
|Too much information was given. 1||49.29||50.44||50.36||PC, CP, AM|
|I agree with the advice I received.||47.02||52.58||51.17||PC < CP, AM|
|I can learn better from video-based messages than text-based messages. 1||48.56||50.84||50.75||PC, CP, AM|
|Grade for the advice||47.61||51.96||50.98||PC, CP, AM|
|The advice was nice in terms of layout and readability.||48.59||49.79||51.18||PC, CP, AM|
|I like the layout of the website.||49.24||50.23||50.49||PC, CP, AM|
|I had problems opening the website. 1||50.79||46.51||50.93||PC, CP, AM|
|I had problems with colors, letter types and/or pictures used in the program. 1||49.82||47.43||51.27||PC, CP, AM|
|I had problems printing the advice. 1||51.58||47.67||49.80||PC, CP, AM|
|The program is user-friendly.||48.51||52.15||50.21||PC, CP, AM|
|The program is a good choice for giving personal feedback.||50.24||49.89||49.86||PC, CP, AM|
|Grade for the program||48.02||50.35||51.37||PC, CP, AM|
Note. PC = precontemplation; CP = contemplation/preparation; AM = action/maintenance.
CP < AM: the mean score of CP is significantly lower than that of AM.
PC, CP, AM: the mean scores of PC, CP and AM are equal.
1 These items are coded the other way around.
Schulz et al.
Schulz et al. BMC Public Health 2012 12:360 doi:10.1186/1471-2458-12-360