Table 2. Summary of frequency, resection rate, and malignancy risk of thyroid cytology practice among Asian countries using TBSRTC.
| Category | Frequency (%) | Resection rate (%) | Risk of malignancy (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| % | 95% CI | I2 | % | 95% CI | I2 | % | 95% CI | I2 | |||
| Nondiagnostic | 8.0 | 6.0–10.6 | 51.3* | 13.5 | 9.6–18.7 | 26.9* | 37.1 | 27.8–47.4 | 8.6 | ||
| Benign | 59.7 | 52.7–66.3 | 26.1* | 9.3 | 5.8–14.5 | 4.6 | 13.9 | 10.0–19.0 | 17.2 | ||
| AUS/FLUS | 7.3 | 6.1–8.8 | 74.7* | 31.1 | 26.2–36.4 | 20.4 | 54.3 | 46.4–61.9 | 26.6* | ||
| FN/SFN | 2.2 | 1.5–3.3 | 20.2 | 56.1 | 46.2–65.5 | 0 | 33.3 | 28.1–38.9 | 21.1 | ||
| SM | 4.4 | 3.4–5.7 | 47.1* | 68.1 | 62.4–73.3 | 53.6* | 89.3 | 83.8–93.1 | 5.1 | ||
| Malignant | 9.7 | 7.2–12.8 | 22 | 74.0 | 68.0–79.2 | 59.5* | 98.1 | 96.5–99.0 | 0 | ||
*, indicates a significant amount of heterogeneity among the included studies (>25%). AUS/FLUS, atypia of undetermined significance/follicular lesion of undetermined significance; FN/SFN, follicular neoplasm/suspicious for a follicular neoplasm; SM, suspicious of malignancy; CI, confidence interval.