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. 2019 May 28;9:7947. doi: 10.1038/s41598-019-44348-3

Table 2.

Performance of PTT-based BP estimation model with different features.

Features SBP DBP
RMSE r RMSE r
f 1 6.58 ± 2.04 0.30 ± 0.12 4.28 ± 1.13 0.34 ± 0.22
f 2 6.69 ± 1.77 0.20 ± 0.12 4.57 ± 1.11 0.21 ± 0.12
f 3 6.05 ± 2.12 0.44 ± 0.20 4.38 ± 1.16 0.37 ± 0.09
f 4 6.17 ± 2.17 0.31 ± 0.29 3.79 ± 1.23 0.36 ± 0.34
f 5 6.53 ± 1.86 0.27 ± 0.15 4.21 ± 1.04 0.40 ± 0.17
f 6 5.68 ± 2.46 0.52 ± 0.25 4.15 ± 1.26 0.42 ± 0.23
f 7 6.41 ± 2.06 0.36 ± 0.15 4.12 ± 1.33 0.46 ± 0.20
f 8 5.33 ± 1.88 0.59 ± 0.22 3.19 ± 0.96 0.64 ± 0.23
f 9 5.09 ± 0.56 0.56 ± 0.23 3.38 ± 0.41 0.58 ± 0.24
f 10 5.19 ± 1.29 0.51 ± 0.31 3.87 ± 1.30 0.45 ± 0.27
f 11 5.12 ± 0.93 0.49 ± 0.34 3.36 ± 0.72 0.52 ± 0.31
f 12 4.74 ± 1.29 0.59 ± 0.29 3.07 ± 0.93 0.58 ± 0.29
f 13 5.75 ± 2.45 0.51 ± 0.24 4.19 ± 1.29 0.41 ± 0.23
f 14 4.20 ± 1.66 0.79 ± 0.07 2.90 ± 0.90 0.77 ± 0.10