Table 3.
Demographics of the study population.
| Parkinson’s patients | Controls | Difference | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Responders (n = 5000) | Number of valid responses | Non-responders (n = 23381) | Responders vs. non-responders | Responders (n = 1292) | Number of valid responses | Non-responders (n = 11413) | Responders vs. non-responders | PD vs. controls | |
| Age (years) | 67.3 (8.9) | 5000 | 66.4 (10.1) | p = 0.819 | 60.8 (13.0) | 1292 | 57.4 (14.0) | p = 0.000* | p = 0.000* |
| Sex (% female) | 48.6% | 4982 | 44.7% | p = 0.971 | 78.0% | 1288 | 77.0% | p = 0.386 | p = 0.000* |
| Stress level in daily life (10-point scale) | 4.4 (1.9) | 5000 | 4.6 (1.9) | 1292 | p = 0.000* | ||||
| Perceived Stress Scale | 15.9 (7.5) | 3127 | 15.3 (7.0) | 1292 | p = 0.000*,1 | ||||
| Parkinson Anxiety Scale | 13.6 (8.9) | 2899 | 11.7 (8.4) | 1292 | p = 0.000* | ||||
| Five Facet Mindfulness Questionnaire | 51.5 (8.0) | 2899 | 52.7 (8.4) | 1292 | p = 0.000* | ||||
| Self-Compassion Scale | 41.0 (9.2) | 2899 | 40.5 (9.6) | 1292 | p = 0.150 1 | ||||
| Ruminative Response Scale | 3.5 (3.0) | 2899 | 3.7 (2.9) | 1292 | p = 0.219 1 | ||||
| Parkinson Disease Questionnaire | 14.7 (13.7) | 4784 | 19.7 (16.9) | p = 0.389 | |||||
| Unified Parkinson’s Disease Rating Scale II | 22.4 (7.2) | 4742 | 24.5 (8.3) | p = 0.006* | |||||
| Parkinson’s Daily Activities Questionnaire | 50.5 (9.5) | 4710 | 49.4 (10.7) | p = 0.000* | |||||
| Non-Motor Symptoms Questionnaire | 10.9 (5.3) | 4838 | 11.2 (5.4) | p = 0.126 | |||||
| Geriatric Depression Scale | 4.1 (3.7) | 4369 | 4.6 (4.0) | p = 0.010* | 2.6 (3.0) | 1237 | 3.4 (3.5) | p = 0.000* | p = 0.000* |
| Disease duration (years) | 5.9 (5.2) | 4966 | 6.3 (5.9) | p = 0.631 | |||||
| Use of levodopa or dopamine agonists (%) | 92.8% | 4935 | 93.2% | p = 0.738 | |||||
1: significant group*sex interaction, reported p-values are related to main effect of group, controlling for sex.
This table shows mean (SD) or percentages for demographic and clinical characteristics. Column 3 and 7 show the number of valid responses for PD and control respondents, since some of the baseline data was not available, and there was an optional part in our patient survey. Columns 5 and 9 show p-values of differences between invited non-responders and all responders, for continuous variables measured with t-tests and for categorical variables with χ2-tests. We indicated all significant differences of p < 0.05 with *.