Table 3.

Group-based values (mean ± SD) for voice use summary statistics of sound pressure level (SPL), fundamental frequency (f0), and vocal dose measures for weeklong data collected from the patient and matched-control groups (n = 35 pairs). The first row reports the duration of monitoring during the week in hours/minutes/seconds (hh:mm:ss). Test statistics exhibiting statistically significant differences between patient-control pairs are labeled with an asterisk (*, p < 0.003). Paired t-test statistics are derived from the pairwise comparison of each summary statistic for control values minus their matched patient values.

Voice use summary statistic	Patient group	Paired control group	Paired t-test statistic	KS test statistic
Monitored duration (hh:mm:ss)	80:24:31 ± 14:49:48	81:32:21 ± 11:36:35	0.37	0.14
SPL (dB SPL re 15 cm)
Mean	84.4 ± 4.5	83.6 ± 4.8	−0.91	0.11
Standard deviation	12.1 ± 2.0	12.9 ± 2.2	1.63	0.23
Minimum	63.4 ± 5.5	61.6 ± 5.8	−1.40	0.23
Maximum	103.6 ± 6.9	104.6 ± 6.7	0.75	0.17
Range	40.2 ± 7.3	43.0 ± 7.9	1.55	0.23
f0 (Hz)
Mode	198.1 ± 22.6	202.9 ± 18.1	1.15	0.20
Standard deviation	76.1 ± 17.6	88.0 ± 18.9	3.48*	0.31
Minimum	167.5 ± 17.4	170.9 ± 14.2	1.10	0.23
Maximum	396.2 ± 67.1	437.2 ± 61.8	3.49*	0.34
Range	228.6 ± 57.9	266.3 ± 59.8	3.45*	0.31
Phonation time
Cumulative (hh:mm:ss)	08:01:02 ± 02:14:43	07:33:39 ± 02:32:51	−0.87	0.23
Normalized (%)	10.0 ± 2.3	9.3 ± 2.7	−1.37	0.20
Cycle dose
Cumulative (millions of cycles)	7.208 ± 2.278	7.324 ± 2.851	0.22	0.17
Normalized (cycles/hr)	89,624 ± 23,879	89,759 ± 30,384	0.02	0.14
Distance dose
Cumulative (m)	27,701 ± 9,303	27,519 ± 12,259	−0.09	0.14
Normalized (m/hr)	345.3 ± 98.1	337.0 ± 134.5	−0.37	0.17