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. 2014 May 9;9(5):e97244. doi: 10.1371/journal.pone.0097244

Table 5. Analysis of qualitative parameters, separated by social context.

Mean of groups Loadings of functions Population difference(3) Sex difference(3)
Context Parameters GER_f(1) GER_m FRA_f FRA_m LD1 LD2 LD3 W(4) p' (*8) sig. W p' (*8) sig.
DiffPop(1) duration 72.022 46.050 53.383 47.531 −0.009 −0.032 −0.003 361127 0.0014 ** 262951 0.3180 n.s.
starting frequency 77.422 80.358 78.186 82.657 0.080 −0.020 0.012 344731 0.3646 n.s. 257697 0.0625 n.s.
frequency slope(2) 0.022 0.196 0.179 −0.004 0.159 1.078 -1.217 278099 0.0000 *** 314160 0.0011 **
minimum frequency 66.513 75.416 67.197 74.674 −0.152 −0.036 −0.051 374026 0.0000 *** 260947 0.1773 n.s.
frequency band 22.500 14.810 23.666 16.180 −0.087 0.007 −0.014 301360 0.0698 n.s. 295967 0.6646 n.s.
frequency COG(3) 75.011 83.405 77.913 83.381 0.117 0.042 0.049 352005 0.0442 trend 264501 0.4819 n.s.
number of jumps 0.629 0.125 0.734 0.251 −0.532 0.332 1.115 302061 0.0177 * 287583 2.8360 n.s.
number of turns 2.069 1.369 2.017 1.084 0.025 0.458 −0.513 334248 2.9200 n.s. 260500 0.1306 n.s.
Proportion of trace: 0.5152 0.4061 0.0787
DiffSex duration 69.299 45.574 46.020 29.772 −0.035 −0.010 −0.011 495472 0.0000 *** 423758 0.0000 ***
starting frequency 79.184 78.511 76.044 75.979 0.007 −0.078 −0.078 469865 0.0000 *** 313569 1.9128 n.s.
frequency slope(2) 0.075 0.238 0.164 0.325 0.396 −0.918 −0.383 339871 0.0001 *** 274447 0.0000 ***
minimum frequency 69.409 73.667 66.275 71.855 −0.117 0.088 0.036 458440 0.0000 *** 251426 0.0000 ***
frequency band 23.252 15.489 22.904 15.529 −0.044 0.075 0.110 371915 1.0400 n.s. 432694 0.0000 ***
frequency COG(3) 79.294 81.399 76.898 80.425 0.094 −0.038 0.029 449380 0.0000 *** 265302 0.0000 ***
number of jumps 0.553 0.144 0.712 0.135 0.178 0.798 −1.311 348256 0.0000 *** 426870 0.0000 ***
number of turns 2.011 1.069 1.669 0.782 0.204 0.065 0.280 419100 0.0212 * 417427 0.0000 ***
Proportion of trace: 0.658 0.333 0.009
SameSex duration 67.089 48.974 52.574 28.722 −0.002 0.031 0.029 294371 0.0020 ** 206936 0.0902 trend
starting frequency 78.299 83.913 74.850 86.112 0.028 −0.113 0.085 241756 0.0358 trend 240086 0.4559 n.s.
frequency slope(2) 0.091 −0.072 0.083 0.012 −0.973 −0.833 0.092 282895 0.1986 n.s. 208738 0.1749 n.s.
minimum frequency 69.478 78.026 62.571 80.645 −0.020 0.190 −0.128 321772 0.0000 *** 199929 0.0041 **
frequency band 23.054 10.809 22.291 12.899 −0.041 0.108 −0.119 248630 0.3710 n.s. 232757 2.8520 n.s.
frequency COG(3) 79.509 84.113 72.288 87.663 0.061 −0.065 0.017 312620 0.0000 *** 209621 0.2371 n.s.
number of jumps 0.605 0.061 0.821 0.118 −0.120 0.096 −0.380 222315 0.0000 *** 239387 0.2715 n.s.
number of turns 1.992 1.200 2.236 0.763 −0.059 −0.371 −0.039 244939 0.0959 trend 243429 0.1270 n.s.
Proportion of trace: 0.5366 0.3964 0.0671
(1)

DiffPop  =  Different population, different sex; DiffSex  =  Same population, different sex; SameSex  =  Same population, same sex. FRA  =  French, GER  =  German, f  =  female, m  =  male.

(2)

Calculated as change of frequency over time (kHz/ms).

(3)

Centre of gravity, see Methods section Sound analysis for calculation.

(4)

Post-hoc Wilcoxon rank-sum tests; corrected p-values.