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Table 1 Demographics characteristics of participants at the baseline of study

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 = 50)
Control group
(n = 50)
p-value
Age (year) 39.52 ± 14.57 39.29 ± 12.03 0.933a
Height (cm) 166.97 ± 11.54 169.27 ± 12.54 0.361
Weight (Kg) 72.50 ± 23.14 72.27 ± 16.70 0.956
BMI (Kg/m2) 25.81 ± 7.29 25.01 ± 4.51 0.526
Gender    0.217
 Male 18 (37.5%) 24 (50.0%)  
 Female 30 (62.5%) 24 (50.0%)  
Smoking    0.136
 Yes 4 (8.3%) 9 (18.8%)  
 No 44 (91.7) 39 (81.2%)  
Alcohol    0.242
 Yes 3 (6.2%) 0 (0.0%)  
 No 45 (93.8%) 48 (100%)  
History of diseases    0.066
 Yes 17(35.4%) 9 (18.8%)  
 No 31 (64.6%) 39 (81.2%)  
Comorbidity    0.789
 Yes 9 (18.8%) 8 (16.7%)  
 No 39 (81.2%) 40 (83.3%)  
History of medication    1.00
 Yes 44 (91.7%) 45 (93.8%)  
 No 4 (8.3%) 3 (6.2%)  
Duration of disease    0.440
 < 1 years 6 (12.5%) 9 (18.7%)  
 1–5 years 13 (27.1%) 13 (27.2%)  
 5–15 years 16 (33.3%) 11 (22.9%)  
 > 15 years 13 (27.1%) 15 (31.2%)  
Numbers of area    0.146
 1 8 (16.6%) 16 (33.3%)  
 2 9 (18.7%) 13 (27.1%)  
 3 12 (25.0%) 8 (16.7%)  
 4 8 (16.6%) 5 (10.4%)  
 ≥ 5 11 (22.1%) 6 (12.5%)  
  1. Values are presented as mean ± SD for quantitative variables and n (%) for qualitative variables
  2. aP-value is calculated by the independent t-test
  3. bP-value is calculated by and Chi-square test