Table 2.

Analysis of frequency of detection of intraperitoneal free cancer cells in gastric cancer using cytology + RT-PCR, RT-PCR and cytology + RT-PCR + cell culture as a diagnostic method

Method	First author	Proportion of positive results and confidence interval
Cytology + RT-PCR	Hao [11]	0.40 (95% CI: 0.29–0.51)
		0.44 (95% CI: 0.33–0.56)
RT-PCR	Wong [18]	0.37 (95% CI: 0.30–0.45)
	Fuijwara [21]	0.43 (95% CI: 0.35–0.52)
Cytology + RT-PCR + cell culture	Takebayashi [20]	0.44 (95% CI: 0.34–0.54)

RT-PCR – reverse transcription polymerase chain reaction