Table 1.
Validation of Key Variables in the DSR
| Key Variables Registered in DSR | Medical Records | PPV | |
|---|---|---|---|
| Yes | No | % (95% CI) | |
| Patient Characteristics | |||
| Sex | 276 | 0 | 100 (99–100) |
| Age | 264 | 12 | 96 (93–98) |
| Side of surgery | 270 | 6 | 98 (95–99) |
| Indication* | |||
| Arthritis | 13 | 5 | 72 (47–90) |
| Type of arthritis | 8 | 5 | 62 (32–86) |
| Osteoarthritis | 101 | 9 | 92 (85–96) |
| Type of osteoarthritis | 64 | 35 | 65 (54–74) |
| Fracture | 107 | 3 | 97 (92–99) |
| Fracture age | 96 | 1 | 99 (94–100) |
| Fracture healing | 23 | 2 | 92 (74–99) |
| Rotator cuff arthropathy | 77 | 5 | 94 (86–98) |
| Humeral head necrosis | 7 | 5 | 58 (28–85) |
| Others | 3 | 6 | 33 (8–65) |
| Previous Surgery* | |||
| All types of previous surgery | 22 | 8 | 73 (54–88) |
| Surgery for instability | 2 | 2 | 50 (7–93) |
| Synovectomy | 2 | 4 | 33 (4–78) |
| Osteosynthesis | 7 | 1 | 88 (47–100) |
| Cuff reconstruction | 5 | 2 | 71 (29–96) |
| Decompression | 4 | 4 | 50 (16–84) |
| AC resection | 2 | 1 | 67 (9–99) |
| Surgery for infection | 3 | 0 | 100 (29–100) |
| Arthroscopy | 3 | 5 | 38 (9–76) |
| Other | 1 | 2 | 33 (1–91) |
| Brand | 230 | 44 | 84 (79–88) |
| Arthroplasty Type | |||
| Hemiarthroplasty | 137 | 29 | 83 (76–88) |
| Total Shoulder Arthroplasty | 36 | 11 | 77 (62–88) |
| Bipolar | 1 | 0 | 100 (3–100) |
| Resurfacing | 14 | 1 | 93 (68–100) |
| Reverse | 38 | 8 | 93 (80–98) |
| Humeral Component | |||
| Fixation technique | 36 | 4 | 90 (76–97) |
| Glenoid Component | |||
| Fixation technique | 55 | 6 | 90 (80–96) |
| Material | 62 | 2 | 97 (89–100) |
| Anchor design | 21 | 5 | 81 (61–93) |
Notes: Medical records: The number of the key variables registered in the DSR and confirmed (yes/no) in the medical records. The percentage of the registrations in the DSR confirmed by medical records. *Multiple indication for a single surgery is possible.
Abbreviations: PPV, positive predictive value; CI, confidence interval.