Statistical analysis
SPSS software was used for statistical analysis, the viscosity of
sputum, humidification effect, and degree of secondary lung infection
were tested by rank and sum. The patients’ disease distributions, phlegm
scab formation, airway spasm, were analyzed using Chi square test. The
patient’s basic situation, daily sputum intake times, respiration
related physiological indicators, daily nursing times and internal
satisfaction score were analyzed with variance analysis, P< 0.05
was considered statistical significant.