Multivariable analysis comparing the total score of PsAID-12 (dependent variable) to the potential variables influencing the quality of life in patients with PsA (n = 144).
| Independent Variables | Coefficient | SE | rpartial | t | p |
|---|---|---|---|---|---|
| Constant | −0.5848 | ||||
| Age, yrs | 0.003444 | 0.01165 | 0.02664 | 0.296 | 0.7681 |
| BMI | −0.001544 | 0.02796 | −0.004981 | −0.0552 | 0.9560 |
| cDAPSA | 0.2242 | 0.01551 | 0.7935 | 14.461 | < 0.0001 |
| Dactylitis | −0.1443 | 0.3276 | −0.03970 | −0.441 | 0.6602 |
| Fibromyalgia | 1.7071 | 0.3101 | 0.4446 | 5.505 | < 0.0001 |
| LEI | −0.001770 | 0.1418 | −0.001126 | −0.0125 | 0.9901 |
| PsA disease duration, yrs | 0.02754 | 0.01459 | 0.1678 | 1.888 | 0.0613 |
| PsO disease duration, yrs | −0.01576 | 0.01032 | −0.1365 | −1.528 | 0.1291 |
| Educational level, yrs | 0.05237 | 0.02741 | 0.1698 | 1.911 | 0.0583 |
| PGA | 0.4739 | 0.09512 | 0.4097 | 4.982 | < 0.0001 |
| SCQ | −0.001721 | 0.03590 | −0.004322 | −0.0479 | 0.9618 |
PsAID-12: Psoriatic Arthritis Impact of Disease 12 items; PsA: psoriatic arthritis; BMI: body mass index; cDAPSA: clinical Disease Activity index for Psoriatic Arthritis; LEI: Leeds Enthesitis Index; PsO: psoriasis; PGA: physician’s global assessment of psoriasis; SCQ: Self-administered Comorbidity Questionnaire; SE: standard error.