Table 4 Subgroup analysis
| Â | Subgroup | Category | n | p | Sen (95% CI) | Spe (95% CI) | PLR (95% CI) | NLR (95% CI) | DOR (95% CI) | AUC (95% CI) |
|---|---|---|---|---|---|---|---|---|---|---|
ASL | Region | CHINA | 14 | 0.30 | 0.88 (0.83,0.92) | 0.89 (0.81,0.94) | 8.4 (4.5,15.4) | 0.13 (0.09,0.20) | 63 (25,157) | 0.94 (0.92,0.96) |
other | 5 | 0.35 | 0.89 (0.68,0.97) | 0.94 (0.84,0.98) | 14.0 (5.1,38.2) | 0.11 (0.03,0.40) | 123 (18,846) | 0.96 (0.94,0.98) | ||
Technique | 3D PCASL | 10 | 0.33 | 0.87 (0.82,0.91) | 0.88 (0.81,0.93) | 7.6 (4.4,13.1) | 0.14 (0.10,0.21) | 53 (24,116) | 0.92 (0.90,0.94) | |
PASL | 8 | 0.46 | 0.93 (0.75,0.98) | 0.93 (0.80,0.98) | 14.2 (4.2,48.1) | 0.08 (0.02,0.31) | 183 (19,1754) | 0.98 (0.96,0.99) | ||
DSC-MRI | Region | CHINA | 4 | 0.23 | 0.91 (0.82,0.96) | 0.90 (0.55,0.99) | 9.6 (1.5,60.4) | 0.10 (0.05,0.21) | 95 (11,835) | 0.89 (0.82,0.96) |
other | 15 | 0.00 | 0.92 (0.80,0.97) | 0.80 (0.70,0.87) | 4.6 (3.1,6.9) | 0.10 (0.04,0.26) | 46 (15,144) | 0.90 (0.87,0.92) | ||
Field strength | 3.0 T | 15 | 0.00 | 0.88 (0.79,0.94) | 0.82 (0.73,0.89) | 5.0 (3.2,7.7) | 0.14 (0.08,0.26) | 35 (17,73) | 0.91 (0.88,0.93) | |
1.5 T | 4 | 0.01 | 1.00 (0.12,1.00) | 0.77 (0.57,0.90) | 4.4 (2.1,9.1) | 0.00 (0.00,10.67) | 2976 (0,3125) | 0.91 (0.89,0.93) | ||
DKI | Region | CHINA | 9 | 0.00 | 0.90 (0.81,0.95) | 0.90 (0.79,0.95) | 8.6 (4.3,17.2) | 0.11 (0.06,0.21) | 75 (35,160) | 0.95 (0.93,0.97) |
other | 7 | 0.46 | 0.85 (0.76,0.91) | 0.79 (0.69,0.87) | 4.1 (2.7,6.2) | 0.20 (0.12,0.32) | 21 (10,44) | 0.88 (0.85,0.91) |