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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