Subgroup analysis according to the severity of the disease by the LM staging system
According to the LM staging system, where participants were placed into three sub-
categories, mild  disease was defined as the LM score of 0-3; moderate disease was defined with a score of between 4-8, and severe disease was more than 8. The nasal irrigation had a significantly better sinus distribution in moderate sinus disease (mean difference=2.61, 95%CI:0.22-5.00, p -value 0.03) and severe sinus disease (mean difference=2.96, 95%CI:0.48-5.44, p -value 0.02).(Table 4)