Table 3

StandardizedT-scores of the program evaluation items in the stage groups
PC; n = 51 CP; n = 29 AM; n = 66 LSD contrasts
Questions
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
Advice
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
Layout
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
Functionality
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

Open Data