Skip to main content

Table 2 Results of itch score, PASI score, and DLQI questionnaire between intervention and control groups

From: The effect of Melissa officinalis syrup on patients with mild to moderate psoriasis: a randomized, double-blind placebo-controlled clinical trial

Variables Intervention group (n = 47) Placebo group (n = 48) P-valuea
Mean ± SD Mean ± SD  
Itch    
 Pre-treatment 6.34 ± 2.68 5.45 ± 2.55 0.104
 Post-treatment 3.45 ± 2.18 5.56 ± 2.81  < 0.001
 p-valueb < 0.001 0.886  
PASI    
 Pre-treatment 3.26 ± 3.58 2.95 ± 2.16 0.603
 Post-treatment 1.65 ± 2.17 3.36 ± 2.38  < 0.001
 p-value  < 0.001 0.002  
DLQI    
 Pre-treatment 67.63 ± 22.97 64.43 ± 23.66 0.503
 Post-treatment 74.37 ± 23.89 65.29 ± 23.74 0.065
 p-value 0.029 0.519  
  1. DLQI dermatology life quality index, PASI psoriasis area and severity index, SD standard deviation
  2. aP-value is calculated by the independent t-test
  3. bP-value is calculated by the Paired t-test