Changes in quantifiable breathing pattern components predict asthma control: an observational cross-sectional study

Table 2 The differences in the breathing pattern components between asthma control groups

Breathing component	Well-controlled group (n = 5 9)		Uncontrolled group (n = 63)		Mann-Whitney U	p (1-tailed)
Breathing component	M^a	Min-Max^b	M	Min-Max	Mann-Whitney U	p (1-tailed)
RR (bpm)	14.92	7.09–21.05	17.16	7.40–32.02	1175	0.000*
Ti/Te	0.66	0.40–0.90	0.68	0.40–0.96	1689	0.385
RC_ampe/AB_ampe^c	1.29	0.43–4.20	1.33	0.37–5.31	1798	0.729
CoV_RR (%)	4.79	0.00–23.02	11.73	0.00–29.71	655	0.000*
CoV_Ti/Te (%)	19.05	10.49–46.11	33.22	14.28–57.39	606	0.000*
CoV_RCampe/_ABampe^d(%)	14.82	6.05–24.82	26.45	7.74–57.62	844	0.000*

^aM median value
^bMin-Max minimum and maximum values
^cRC_ampe/AB_ampe Ribcage to abdominal amplitude during expiration phase
^dCoV%_RCampe/_ABampe The within-individual variability of ribcage to abdominal amplitude during expiration phase
*significant result at p < 0.01

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