From: Accuracy and consistency of weights provided by home bathroom scales
Calibration weight | n | Mean | SD | *P |
---|---|---|---|---|
Scale | (kg) | (kg) | ||
10 kg | ||||
All scales | 55 | 0.2 | 0.3 | |
Dial | 18 | 0.4 | 0.3 | <0.001 |
Digital | 37 | 0.1 | 0.2 | |
25 kg | ||||
All scales | 60 | 0.4 | 0.5 | |
Dial | 18 | 0.7 | 0.5 | <0.001 |
Digital | 42 | 0.2 | 0.3 | |
50 kg | ||||
All scales | 61 | 0.4 | 0.4 | |
Dial | 18 | 0.7 | 0.5 | 0.004 |
Digital | 43 | 0.3 | 0.3 | |
75 kg | ||||
All scales | 61 | 0.6 | 0.6 | |
Dial | 18 | 1.0 | 0.7 | <0.001 |
Digital | 43 | 0.4 | 0.4 | |
100 kg | ||||
All scales | 60 | 0.7 | 0.7 | |
Dial | 18 | 1.2 | 0.9 | 0.001 |
Digital | 42 | 0.54 | 0.5 | |
110 kg | ||||
All scales | 59 | 0.8 | 0.8 | |
Dial | 18 | 1.2 | 1.0 | 0.007 |
Digital | 41 | 0.6 | 0.6 |