Table 1.

Characteristics of included studies

Author	Year	Study design	CRPM specific	Sample size	Mean age (years)	Males (%)
Portillaet al. [15]	1999	R	Y	18	55.3	72.2
Glehenet al. [25]	2004	R	Y	26	.	.
Bijelicet al. [26]	2008	R	Y	18	.	.
Bretcha-Boixet al. [27]	2010	R	Y	2	55.5∼	40∼
Cashinet al. [28]	2012	R	Y	8	.	.
Votanopouloset al. [29]	2012	R	N	4	46.4 (SD 11.1)∼	43.5∼
Chuaet al. [30]	2013	R	N	11	53 (R 19–79) m	49∼
Williamset al. [31]	2014	R	Y	18	52.4 m	38.9
Choudryet al. [23]	2019	R	N	29	52.2 (SD 10.6)∼	.
Jostet al. [32]	2020	R	Y	9	47	33
Lakset al. [24]	2021	R	Y	30	58.7	26.7
Paaschet al. [33]	2021	R	N	7	58.1	42.9
Suttonet al. [18]	2021	R	N	18	53 (R 44–63) m	94.4
Valenzuelaet al. [34]	2022	R	N	16	52.6∼	43.2∼
Pasqualet al. [35]	2023	R	N	15	61.65 (SD 11.44)∼	.

CRPM = colorectal peritoneal metastases.

R = retrospective.

Y = yes, N = no.

∼ = of larger peritoneal malignancy cohort.

m = median instead of mean.

SD = standard deviation, R = range