Table 2.
Select cross-sectional validity metrics for each device
| Model | Body fat (%) | 95 % CI for constant error (%) | Total error (%) | Equiv. | 90 % TOST (%) | Standard error of the estimate rating* | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean | sd | Min | Max | CE | LL, UL | LL, UL | ||||
| Criterion (4C) | 24·7 | 9·1 | 6·4 | 46·9 | – | – | – | – | ||
| Omron HBF-306 | 21·2 | 8·0 | 8·5 | 40·6 | –3·5 | –4·4, −2·5 | 5·4 | No | –4·3, −2·7 | Fairly good |
| RENPHO Scale | 23·3 | 7·5 | 6·3 | 45·0 | –1·4 | –3·1, 0·2 | 7·2 | No | –2·8, 0·0 | Poor |
| HAWANA Scale | 27·6 | 6·0 | 8·4 | 41·0 | 2·9 | 1·2, 4·6 | 7·8 | No | 1·5, 4·3 | Poor |
| Wyze Scale | 28·3 | 6·6 | 8·9 | 46·1 | 3·6 | 2·2, 5·0 | 6·9 | No | 2·5, 4·8 | Poor |
| INEVIFIT Scale | 26·1 | 7·8 | 5·0 | 43·0 | 1·4 | –0·2, 3·0 | 6·8 | No | 0·1, 2·7 | Poor |
| Weight Watchers Scale | 25·7 | 6·3 | 6·3 | 40·1 | 0·9 | –0·8, 2·7 | 7·5 | No | –0·5, 2·4 | Poor |
| Tanita UM-081 | 25·3 | 8·8 | 6·5 | 48·0 | 0·6 | –0·8, 1·9 | 5·8 | Yes | –0·6, 1·7 | Poor |
| Vitagoods Form Fit | 23·7 | 7·3 | 6·9 | 45·6 | –1·1 | –2·6, 0·5 | 6·8 | No | –2·4, 0·3 | Poor |
| Omron HBF-516 | 28·0 | 9·6 | 8·3 | 53·6 | 3·3 | 2·3, 4·4 | 5·6 | No | 2·4, 4·2 | Fair |
| Seca 804 | 36·4 | 9·4 | 20·1 | 67·4 | 11·7 | 10·6, 12·8 | 12·6 | No | 10·8, 12·6 | Fair |
| Withings Body Cardio | 24·4 | 8·7 | 5·1 | 47·5 | –0·4 | –1·7, 1·0 | 5·8 | Yes | –1·5, 0·8 | Poor |
| Tanita BC-554 Ironman | 25·5 | 8·8 | 6·3 | 48·2 | 0·7 | –0·6, 2·1 | 5·8 | Yes | –0·4, 1·9 | Poor |
| Tanita BC-568 InnerScan | 23·3 | 9·4 | 6·7 | 48·2 | –1·4 | –2·4, −0·4 | 4·4 | No | –2·2, −0·6 | Fairly good |
| InBody H20N | 24·6 | 9·8 | 5·0 | 50·5 | –0·1 | –0·9, 0·7 | 3·3 | Yes | –0·8, 0·6 | Very good |
| Seca mBCA 515/514 | 24·5 | 9·2 | 5·6 | 47·5 | –0·2 | –1·0, 0·6 | 3·3 | Yes | –0·8, 0·4 | Very good |
CE, constant error; LL, lower limit; Min, minimum; Max, maximum; TOST, two one-sided t tests; UL, upper limit.
*
Based on the subjective ranking categories of Lohman and Milliken(26).