Table 4.
Clinical characteristics of the RA group before and after propensity score matching.
| Index | Before PSM | After PSM | P-value |
|---|---|---|---|
| No. of cases | 279 | 107 | |
| Age, yr | 75.7 ± 10.3 | 73.8 ± 8.8 | 5.972 × 10−2 |
| Women | 256 (91.8) | 102 (95.3) | 6.233 × 10−1 |
| Disease duration | 11.9 ± 7.7 | 11.1 ± 7.5 | 2.874 × 10−1 |
| DAS28-CRP | 1.79 ± 0.71 | 1.55 ± 0.40 | 1.012 × 10−2 |
| mHAQ | 0.596 ± 0.689 | 0.420 ± 0.650 | 1.237 × 10−2 |
| SHS | 65.0 ± 73.0 | 51.2 ± 60.1 | 1.643 × 10−1 |
| Pain VAS | 26.1 ± 23.7 | 21.6 ± 21.3 | 1.120 × 10−1 |
Values are presented as mean ± standard deviation or number (%).
RA, a patient group who is suffered from rheumatoid arthritis; PSM. Propensity score matching; DAS28-CRP, 28-joints disease activity score with C-reactive protein; mHAQ, modified Health Assessment Questionnaire; SHS, Sharp/van der Heijde Score; Pain VAS, pain score with visual analogue scale.
In statistical significance column, before > after demonstrates significantly greater in before propensity score matching than in after within 5%, and after > before demonstrates significantly greater in after propensity score matching than in before within 5%.