Change in the score for each patient subpopulation (bold: subpopulation with significantly higher improvement; n(preintervention): preintervention questionnaire data number; n(postintervention): postintervention questionnaire data number; data numbers (n) other than ‘number of patients surveyed’ (see table 1) are due to occasional deficiencies in data collection; p values were determined using χ2 test and the Kruskal-Wallis test)
| Sex | Mean change (point) | Mean change (%) | |||
| Male n(preintervention)=368 n(postintervention)=362 | +2.02 | +8.42 | |||
| Female n(preintervention)=502 n(postintervention)=467 | +2.10 | +8.75 | |||
| P>0.05 | |||||
| Age | Mean change (point) | Mean change (%) | Marital status | Mean change (point) | Mean change (%) |
| 18–25 years n(preintervention)=106 n(postintervention)=105 | +1.39 | +5.79 | Other n(preintervention)=21 n(postintervention)=15 | +1.93 | +8.04 |
| 26–40 years n(preintervention)=228 n(postintervention)=213 | +1.26 | +5.25 | Single n(preintervention)=208 n(postintervention)=190 | +1.71 | +7.13 |
| 41–65 years n(preintervention)=332 n(postintervention)=318 | +2.43 | +10.13 | Married/long-term relationship n(preintervention)=475 n(postintervention)=473 | +1.86 | +7.75 |
| 65-years n(preintervention)=220 n(postintervention)=202 | +2.59 | +10.79 | Widowed n(preintervention)=171 n(postintervention)=156 | +2.84 | +11.83 |
| P<0.001 | p<0.02 | ||||
| Educational attainment | Mean change (point) | Mean change (%) | Type of settlement | Mean change (point) | Mean change (%) |
| Primary school n(preintervention)=61 n(postintervention)=69 | +2.43 | +10.13 | Villages n(preintervention)=30 n(postintervention)=30 | +0.97 | +4.04 |
| Vocational school n(preintervention)=210 n(postintervention)=189 | +2.49 | +10.38 | Other cities n(preintervention)=363 n(postintervention)=343 | +2.50 | +10.42 |
| Baccalaureate n(preintervention)=301 n(postintervention)=292 | +2.39 | +9.96 | County towns n(preintervention)=86 n(postintervention)=88 | +3.33 | +13.88 |
| University n(preintervention)=303 n(postintervention)=266 | +1.67 | +6.96 | Capital city n(preintervention)=410 n(postintervention)=385 | +1.67 | +6.96 |
| p=0.02 | p<0.02 |