Table 4.
Accuracy and Sensitivity of EUS-FNA/B for Trainees and Experts According to Different Clinical Variables
| Variable | Accuracy, % | Sensitivity, % | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FNA+FNB | FNA | FNB | FNA+FNB | FNA | FNB | ||||||||||||||||||
| E | T | p-value | E | T | p-value | E | T | p-value | E | T | p-value | E | T | p-value | E | T | p-value | ||||||
| Puncture | |||||||||||||||||||||||
| Trans-gastral | 84.1 | 85.4 | 0.89 | 72.7† | 80.8 | 0.91 | 90.0 | 93.3 | 0.85 | 75.9 | 81.3 | 0.84 | 66.7† | 73.7 | 0.95 | 83.3 | 92.3 | 0.84 | |||||
| Transduodenal | 86.7 | 68.5 | 0.004* | 84.0 | 70.5 | 0.28 | 87.7 | 63.3 | 0.01* | 85.3 | 63.5 | 0.004* | 78.9 | 66.1 | 0.44 | 87.8 | 56.5 | 0.007* | |||||
| Location | |||||||||||||||||||||||
| Head | 86.1 | 69.1 | 0.02* | 81.2 | 71.9 | 0.67 | 88.7 | 62.5 | 0.01* | 84.6 | 64.1 | 0.02* | 72.7 | 67.4 | 0.98 | 89.7 | 55.6 | 0.009* | |||||
| Uncinate | 85.7 | 66.7 | 0.24 | 88.9† | 66.7 | 0.42 | 83.3 | 66.7† | 0.84 | 83.3 | 61.9 | 0.26 | 87.5† | 62.5 | 0.43 | 80.0† | 60.0† | 0.83 | |||||
| Body | 82.6 | 76.9 | 0.88 | 60.0† | 70.6 | 0.92 | 88.9 | 88.9† | 0.51 | 71.4 | 72.7 | 0.76 | 60.0† | 64.3 | 0.71 | 77.8† | 87.5† | 0.90 | |||||
| Tail | 88.9 | 100 | 0.54 | 83.3† | 100† | 0.83 | 91.7 | 100† | 0.71 | 84.6 | 100 | 0.58 | 75.0† | 100† | 0.91 | 88.9† | 100† | 0.75 | |||||
| Tumor type | |||||||||||||||||||||||
| Malignant | 82.5 | 68.4 | 0.02* | 75.0 | 69.1 | 0.73 | 85.5 | 69.4 | 0.08 | 82.5 | 68.4 | 0.02* | 75.0 | 67.9 | 0.64 | 85.5 | 69.4 | 0.08 | |||||
| Benign | 94.6 | 87.5 | 0.53 | 100† | 87.0 | 0.71 | 93.1 | 88.9† | 0.76 | - | - | - | - | - | - | ||||||||
| Tumor size | |||||||||||||||||||||||
| <20 mm | 88.2 | 66.7 | 0.24 | 83.3† | 62.5 | 0.68 | 100† | 80.0† | 0.85 | 78.6 | 62.5 | 0.57 | 80.0† | 61.5 | 0.85 | 100† | 66.7† | 0.78 | |||||
| 20–40 mm | 80.0 | 72.0 | 0.36 | 71.4 | 72.0 | 0.83 | 82.1 | 74.1 | 0.63 | 76.6 | 65.8 | 0.28 | 64.7 | 64.3 | 0.80 | 80.0 | 69.6 | 0.55 | |||||
| >40 mm | 94.4 | 80.9 | 0.43 | 100† | 92.3 | 0.75 | 92.3 | 62.5† | 0.26 | 93.3 | 81.3 | 0.64 | 100† | 90.0 | 0.92 | 90.9 | 66.7† | 0.55 | |||||
| ASA | |||||||||||||||||||||||
| <3 | 87.5 | 74.3 | 0.02* | 75.9 | 74.3 | 0.93 | 93.9 | 74.3 | 0.01* | 84.1 | 68.8 | 0.04* | 69.6 | 68.5 | 0.86 | 93.3 | 69.2 | 0.01* | |||||
| ≥3 | 81.6 | 70.5 | 0.36 | 100† | 70.6 | 0.20 | 77.4 | 70.0† | 0.95 | 78.6 | 67.6 | 0.48 | 100† | 66.7 | 0.33 | 73.9 | 70.0† | 0.84 | |||||
| Needle type | |||||||||||||||||||||||
| FNA | 80.6 | 73.1 | 0.50 | 75.0 | 67.9 | 0.64 | |||||||||||||||||
| FNB | 87.8 | 73.3 | 0.05* | 85.5 | 69.4 | 0.08 | |||||||||||||||||
| Needle size | |||||||||||||||||||||||
| 19 Gauge | 81.6 | 72.4 | 0.37 | 80.6 | 69.3 | 0.30 | 100† | 87.5† | 0.42 | 75.9 | 67.9 | 0.57 | 75.0 | 65.7 | 0.51 | 100† | 87.5† | 0.18 | |||||
| 22 Gauge | 87.5 | 74.5 | 0.07 | 100† | 80.0 | 0.41 | 87.5 | 70.3 | 0.26 | 85.3 | 69.2 | 0.08 | 100† | 81.8 | 0.35 | 85.3 | 64.3 | 0.02* | |||||
| Anticoagulants | |||||||||||||||||||||||
| Yes | 80.0 | 72.7 | 0.59 | 90.9 | 75.0 | 0.47 | 75.0 | 66.7 | 0.84 | 76.9 | 70.5 | 0.76 | 88.9 | 73.3 | 0.60 | 70.6 | 64.3† | 0.98 | |||||
| No | 87.9 | 73.4 | 0.01* | 76.0 | 71.9 | 0.90 | 93.1 | 76.7 | 0.04* | 84.5 | 67.1 | 0.02* | 68.4 | 64.7 | 0.99 | 92.0 | 72.7 | 0.07 | |||||
EUS, endoscopic ultrasound; FNA/B, fine-needle aspiration/biopsy; E, expert; T, trainee; ASA, American Society of Anesthesiologists classification.
*p<0.05; †Number of cases <10.