Table 4 Test characteristics of the MRI features in patients with UA for RA development
Sensitivity | Specificity | PPV | NPV | Accuracy | AUC | |
|---|---|---|---|---|---|---|
Foot (MTPs) | ||||||
Tenosynovitis | 29 (19–41) | 86 (75–93) | 69 (50–83) | 53 (43–63) | 57 (48–65) | 0.58 |
Synovitis | 22 (14–34) | 83 (72–91) | 58 (39–76) | 50 (40–60) | 52 (43–60) | 0.53 |
BME | 9 (4–19) | 81 (70–89) | 35 (17–59) | 45 (36–55) | 44 (35–53) | 0.45 |
Any Inflammation | 38 (27–50) | 68 (55–78) | 56 (41–70) | 50 (39–61) | 52 (43–61) | 0.53 |
Hand (MCPs and wrist) | ||||||
Tenosynovitis | 72 (60–81) | 59 (47–71) | 66 (54–76) | 66 (53–77) | 66 (57–74) | 0.66 |
Synovitis | 44 (32–56) | 69 (57–80) | 61 (46–74) | 53 (42–64) | 56 (47–65) | 0.57 |
BME | 33 (23–45) | 59 (47–71) | 47 (33–61) | 45 (34–56) | 46 (37–54) | 0.46 |
Any Inflammation | 77 (65–85) | 36 (25–48) | 56 (46–66) | 58 (42–65) | 57 (48–65) | 0.56 |
Hand or foot | ||||||
Tenosynovitis | 73 (62–83) | 54 (42–66) | 64 (52–74) | 65 (51–77) | 64 (55–72) | 0.64 |
Synovitis | 48 (37–60) | 59 (47–71) | 56 (43–69) | 51 (40–63) | 54 (45–62) | 0.54 |
BME | 39 (28–51) | 47 (35–60) | 45 (32–58) | 42 (31–54) | 43 (35–52) | 0.43 |
Any Inflammation | 78 (67–86) | 24 (15–36) | 53 (43–62) | 50 (33–67) | 52 (43–61) | 0.51 |