Table 4: Subgroup analysis of additional benefit of serum AFP for HCC detection
| HCC detection (%) | |||||||||||||
| With HCC | US positive | US and/or AFP positive | p-value* | ADR (%) | NND | ||||||||
| Total (452) | 150 | 122 (81.3) | 145 (96.7) | <0.001 | 15.3 | 20 | |||||||
| CHB** (254) | 69 | 54 (78.3) | 66 (95.7) | 0.002 | 17.4 | 22 | |||||||
| • With cirrhosis (154) | 54 | 40 (74.1) | 51 (94.4) | 0.004 | 20.4 | 14 | |||||||
| • No cirrhosis (100) | 15 | 14 (93.3) | 15 (100) | 0.308 | 6.7 | 100 | |||||||
| CHC*** (129) | 61 | 50 (82.0) | 60 (98.4) | 0.002 | 16.4 | 13 | |||||||
| Alcoholic cirrhosis (33) | 8 | 7 (87.5) | 8 (100) | 0.302 | 12.5 | 33 | |||||||
| Cryptogenic cirrhosis (18) | 7 | 5 (71.4) | 6 (85.7) | 0.515 | 14.3 | 18 | |||||||
*Z-test comparing proportion of US positive vs US and/or AFP positive; **including CHB/CHC coinfection and CHB with alcoholic cirrhosis; ***including CHC with alcoholic cirrhosis; CHB: Chronic hepatitis B; CHC: Chronic hepatitis C; ADR: Additional detection rate