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. 2021 Oct;12(5):2073–2081. doi: 10.21037/jgo-21-556

Table 2. Correlation between SMI and clinical features.

Item Number of cases SMI (cm2/m2)
Before chemotherapy After chemotherapy
Age
   ≤60 years 14 47.65±6.97 44.88±8.29
   >60 years 13 45.93±5.28 42.67±6.04
   P value 0.4792 0.4391
Gender 1,264 1,181
   Male 22 47.90±5.74 44.84±6.91
   Female 5 42.23±5.17 39.29±6.34
   P value 0.0731 0.1131
Dietary intake
   Moderate decline 8 47.34±6.28 44.27±5.98
   Severe decline 19 46.59±5.73 43.52±5.37
   P value 0.7650 0.7510
BMI
   Low weight 5 41.83±4.11 35.55±5.35
   Normal weight 15 46.31±5.09 43.37±4.80
   Overweight 7 51.58±5.40 50.66±5.26
   P value 0.0095* 0.0001*
OPNI
   ≤41.26 18 48.76±5.71 45.68±6.82
   >41.26 9 42.82±5.34 39.78±6.14
   P value 0.0154* 0.0384*
Primary site
   Cardia 2 41.27±1.38 37.06±6.19
   Stomach 25 47.30±6.06 44.35±6.94
   P value 0.1867 0.1636

*, P<0.05. SMI, skeletal muscle index; BMI, body mass index; OPNI, Onodera’s prognostic nutritional index.