Table 6: "Test_a" synthetic statistics by gender, age and duration of disease.
| Gender | Mean | N | SD |
| Women | 5.1866 | 1672 | 2.8889 |
| Men | 4.2826 | 828 | 2.76571 |
| Total | 4.8872 | 2500 | 2.87976 |
Significant t-Student test P-value = 0.000.
| Age class | Mean | N | SD |
| Up to 20 | 4.1732 | 127 | 2.77487 |
| 21-40 | 4.7601 | 892 | 2.87187 |
| 41-60 | 5.1759 | 1086 | 2.88 |
| 60 or more | 4.6101 | 395 | 2.85253 |
| Total | 4.8872 | 2500 | 2.87976 |
Significant ANOVA test P-value = 0.000.
| How many years | Mean | N | SD |
| Up to 1 | 3.3178 | 129 | 2.58597 |
| 5-Feb | 4.4596 | 681 | 2.65439 |
| 10-Jun | 5.135 | 600 | 2.81839 |
| 20-Nov | 5.6295 | 502 | 2.89575 |
| 21-30 | 5.8194 | 216 | 2.83988 |
| 30 or more | 5.4368 | 190 | 2.87181 |
| Total | 5.0311 | 2318 | 2.85242 |
Significant ANOVA test P-value = 0.000.