Table 1.
Characteristics of included studies.
| Author. Year | Race | Participants | Number | Blood sample | Gender (Male/Female) |
Age | BMI | Ghrelin |
|---|---|---|---|---|---|---|---|---|
| Changzhen Zhu et al., 2020 | Asian | Gastric cancer | 38 | Serum | 29/9 | Unspecified | Unspecified | 22.4 ± 6.2 |
| Qi Huang-Yue et al., 2007 | Asian | Gastric cancer | 58 | Plasma | 43/15 | 58.9 ± 13.3 | 21.8 ± 3.4 | 110.3 ± 92.1 |
| Natalie R. Pritchett et al., 2020 | Asian | Gastric cancer | 776 | Plasma | 467/309 | 55.3 ± 8 | 21.7 ± 2.2 | 917 ± 355.6 |
| Natalie R. Pritchett et al., 2020 | Asian | Gastric cancer | 249 | Plasma | Unspecified | 58 ± 9 | 24.6 ± 3.3 | 706 ± 259 |
| Hai-Tao Wang et al., 2008 | Asian | Gastric cancer | 42 | Plasma | 19/23 | 49.5 ± 6 | 24.6 ± 3.3 | 464.6 ± 126.5 |
| Anna Zub-Pokrowiecka et al., 2011 | European | Gastric cancer | 25 | Plasma | 14/11 | 49.5 ± 6 | 23.4 ± 2.8 | 191.1 ± 17.8 |
| Krike P. et al., 2018 | European | Gastric cancer | 196 | Plasma | Unspecified | Unspecified | Unspecified | 464.2 ± 268 |
| O Kemik et al., 2011 | European | Gastric cancer | 31 | Plasma | 14/17 | 46.8 ± 11.9 | 16.2 ± 1.5 | 723.7 ± 270.8 |
| Hajime Isomoto et al., 2005 | Asian | Gastric cancer | 23 | Plasma | 11/12 | 60 | 22.1 | 183.2 ± 121.2 |
| Hye-Kyung Jung et al., 2022 | Asian | Gastric cancer | 13 | Plasma | 8/5 | 59.2 ± 10.4 | 24.6 ± 2.8 | 631 ± 97 |