Table 3.
Standardized Quality Scores for Propensity Score Methods in Studies Investigating the Effectiveness of Antimicrobial Therapy per Propensity Score Method Category
| Propensity Score Method Used (No. of Studies) | ||||||
|---|---|---|---|---|---|---|
| SQSPM | All Studies (n = 108) | Matching (n = 50) | IPTW (n = 11) | Stratification (n = 9) | Propensity Score Adjusted Regression (n = 36) | Propensity Score Method Not Specified (n = 2) |
| >30–40, No. (%) | 5 (4.6) | 0 | 3 (27.3) | 0 | 1 (2.8) | 1 (50.0) |
| >40–50, No. (%) | 21 (19.4) | 10 (20.0) | 2 (18.2) | 4 (44.4) | 5 (13.9) | 1 (50.0) |
| >50–60, No. (%) | 37 (34.3) | 16 (32.0) | 2 (18.2) | 3 (33.3) | 15 (41.7) | 0 |
| >60–70, No. (%) | 34 (31.5) | 17 (34.0) | 4 (36.4) | 0 | 14 (38.9) | 0 |
| >70–80, No. (%) | 9 (8.3) | 5 (10) | 0 | 2 (22.2) | 1 (2.8) | 0 |
| >80–90, No. (%) | 2 (1.9) | 2 (4.0) | 0 | 0 | 0 | 0 |
| >90–100, No. (%) | 0 | 0 | 0 | 0 | 0 | 0 |
| Mean SQSPM (±SD) | 58 (±10) | 61 (±10) | 53 (±11) | 56 (±12) | 57 (±8) | 40 (±10) |
Abbreviations: IPTW, inverse probability of treatment weighting; SQSPM, Standardized Quality Score for Studies using Propensity score Methods.