HLA-DQB1/DRB1 Alleles Associate with Traditional Chinese Medicine Syndrome of Chronic Hepatitis B: A Potential Predictor of Progression

Table 4

Characteristics of the included studies in meta-analysis.

Study	Region	CHB (n)	Controls (n)	Type of control	HLA genotyping method	Reference
Fu	China	81	90	Healthy	PCR-SSOP	[24]
Han	China	72	200	Healthy	PCR-SSP	[16]
Jiang	China	52	106	Healthy	PCR-SSP	[25]
Kong	China	51	51	Healthy	PCR-SSP	[26]
Liu	China	102	201	Healthy	PCR-SBT	[27]
Yang	China	54	108	Healthy	PCR-SSP	[28]
Chen	China	120	400	Healthy	PCR-SSOP	[29]

PCR-SSOP, polymerase chain reaction with sequence-specific oligonucleotide probes; PCR-SSP, polymerase chain reaction with sequence-specific primers; PCR-SBT, polymerase chain reaction sequence-based typing.