Food-frying efficiency Working posture Subjective rating Subjective preference Total
Bent angle 0   -1   0   0   -1  
  15° +1   0   +1   +1   +3  
  30° 0   0   0   0   0  
  45° -1   +1   -1   -1   -2  
Handle length 25 cm +1   +1   +1   +1   +4  
  30 cm -1   -1   -1   -1   -4  
Note: The highest level of Duncan’s multiple range test, the spatula(s) obtains +1.
The lowest level of Duncan’s multiple range test, the spatula(s) obtains -1.
Table 3: Comprehensive comparison of the four criteria used to evaluate the spatulas.