Table 1. Previous studies investigating the impact of preoperative SMI-defined sarcopenia on the postoperative outcomes in patients with gastric cancer.
| Authors | Country | No. of patients, sarcopenia/total | Muscle mass measurement method | SMI cut-offs to define sarcopenia | Significant impact of sarcopenia | |||
|---|---|---|---|---|---|---|---|---|
| Male | Female | Postoperative complications | Survival | |||||
| Fukuda et al. (37) | Japan | 21/99 (21%) | BIA | 8.87 | 6.42 | Yes | N/A | |
| Wang et al. (16) | China | 32/255 (13%) | CT | 36.0 | 29.0 | Yes | N/A | |
| Huang et al. (38) | China | 176/470 (37%) | CT | 40.8 | 34.9 | Yes (only severe sarcopenia) | N/A | |
| Zhang et al. (39) | China | 24/156 (15%) | CT | 40.8 | 34.9 | Yes | N/A | |
| Zhuang et al. (44) | China | 389/937 (42%) | CT | 40.8 | 34.9 | Yes | Yes | |
| Nishigori et al. (30) | Japan | 76/177 (43%) | CT | 53.0 for BMI ≥25.0; 43.0 for BMI <25.0 |
41.0 | N/A | Yes | |
| Kudou et al. (40) | Japan | 42/148 (28%) | CT | 53.0 for BMI ≥25.0; 43.0 for BMI <25.0 |
41.0 | No | Yes | |
| Tegels et al. (41) | Netherlands | 86/152 (57%) | CT | 53.0 for BMI ≥25.0; 43.0 for BMI <25.0 |
41.0 | No | No | |
| Sakurai et al. (42) | Japan | 142/569 (25%) | CT | 43.2 | 34.6 | No | Yes | |
| Tamandl et al. (43) | Austria | 130/200 (65%) | CT | 55.0 | 39.0 | N/A | Yes | |
Severe sarcopenia was defined as both low muscle strength and low physical performance in addition to low muscle mass. BIA, bioelectrical impedance analysis; CT, computed tomography; SMI, skeletal muscle index (CT: cm2/m2, BIA: kg/ m2); BMI, body mass index (kg/m2); N/A, not applicable.