Table 3.
Comparison of matched vs unmatched treatment participants in PSM-based model.
| Matched Mean (SD) | Unmatched Mean (SD) | stdmdiff | t-test (p-value) | |
|---|---|---|---|---|
| Age | 46 (24.4) | 47.5 (27.8) | −0.06 | 0.070 |
| Sex (1 = Female) | 0.5 (0.5) | 0.6 (0.5) | −0.01 | 0.620 |
| Charlson Score | 1.2 (1.6) | 2 (2.4) | −0.47 | 0.000 |
| N° physician visits | 13.3 (8.7) | 17.5 (10.1) | −0.47 | 0.000 |
| N° specialist visits | 6 (5.5) | 8.8 (6.5) | −0.5 | 0.000 |
| N° Hosp visits | 1.6 (1.3) | 2 (1.9) | −0.29 | 0.000 |
| Hosp LOS | 1.6 (1.3) | 2 (1.9) | −0.21 | 0.000 |
| Rehab LOS | 23.7 (12.8) | 21.2 (11.6) | 0.2 | 0.000 |
| N° pres. | 7.4 (6.1) | 10.7 (7.3) | −0.52 | 0.000 |
| Days of temp. Incapacity | 33.8 (56.6) | 46 (74.5) | −0.21 | 0.000 |
| Days of perm. Incapacity | 603 (224.8) | 545.6 (304.6) | 0.24 | 0.000 |
stdmdiff: Standard mean difference.