. Author manuscript; available in PMC: 2018 Jun 1.

Published in final edited form as: Lung. 2014 Jun 19;192(5):765–773. doi: 10.1007/s00408-014-9608-3

Table 3.

Spectral and spectro-temporal parameters as a function of age, gender, weight, and height as extracted using the complete recordings

	Fitted regression line	Lower/upper limits of normal (±1.64 σ)
Respiratory rate	44.97 + 0.46 × age – 0.196 × height – 0.260 × weight	±37.00
Heart rate	118.63 − 3.45 × age + 0.277 × height – 1.842 × weight	+320.54
MFCC₁	3.97 + 0.050 × age + 0.013 × height – 0.024 × weight	±0.23
MFCC₂	−0.24 + 0.074 × age + 0.004 × height – 0.009 × weight	±0.14
MFCC₃	0.69 + 0.015 × age + 0.006 × height – 0.013 × weight	±0.05
Spectral width (PW)	220.64 – 0.67 × age − 0.892 × height + 1.23 × weight	±3,588.45
Spectral slope (SL)	−7.11 – 0.013 × age − 0.043 × height + 0.05 × weight	±1.15
Power ratio (PR)	0.99 + 0.002 × age − 0.000023 × height – 0.000041 × weight	+5.93 × 10⁻⁵
Power of regression line (PLN)	3844.61 + 30.72 × age + 89.11 × height – 144.06 × weight	+3.96 × 10⁶