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. 2011 Oct 18;16(4):351–356. doi: 10.1111/j.1542-474X.2011.00462.x

Table 3.

Variation of P Wave SAECG Parameters with Age

[18–30] Years [30–50] Years >50 Years P for Trend
PWD (ms) 104.55 ± 11.55  109.14 ± 16.16  114.45 ± 14.22   0.002
RMS40 (μV) 5.91 ± 2.37 6.37 ± 2.37 6.64 ± 2.83 0.04
RMS30 (μV) 5.22 ± 2.05 5.57 ± 2.27 5.94 ± 2.66 0.03
RMS20 (μV) 5.22 ± 2.05 5.56 ± 2.28 5.90 ± 2.61 NS
RMSP (μV) 7.53 ± 2.37 7.71 ± 2.47 7.52 ± 2.51 NS
INTP (μV·s) 612.00 ± 230.68 680.89 ± 252.07 678.43 ± 247.37 NS