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Table 3 Summary of International Prostate Symptom Score (IPSS) by visit and treatment

From: A double blind, placebo-controlled randomized comparative study on the efficacy of phytosterol-enriched and conventional saw palmetto oil in mitigating benign prostate hyperplasia and androgen deficiency

Visit Observed value Change from baseline
Intervention
(VISPO)
n = 33
Comparator
(SPO)
n = 33
Placebo
n = 33
p-value** Intervention
(VISPO)
n = 33
p-value* Comparator
(SPO)
n = 33
p-value* Placebo
n = 33
p-value* p-value**
Visit 1 20.00 ± 4.41 19.45 ± 3.82 20.00 ± 3.74 0.815(1)  
Visit 2 18.06 ± 4.14a 19.09 ± 3.89ab 20.70 ± 3.37b 0.021(1) −1.94 ± 1.85a < 0.001 −0.36 ± 1.98b 0.300 0.70 ± 1.38b 0.007 < 0.001(1)
Visit 3 16.82 ± 4.03a 18.55 ± 4.22ab 20.73 ± 4.87b 0.002(1) −3.18 ± 3.14a < 0.001 −0.91 ± 3.34ab 0.128 0.73 ± 5.01b 0.410 < 0.001(1)
  1. Data are presented as Mean ± SD; n = No of subjects
  2. a-b values within a row with different superscript letters differ (p < 0.05), as analysed by one-way ANOVA
  3. *p values were compared within each group from baseline using paired t test
  4. **p values were compared between groups
  5. 1)P values were derived from ANOVA, and Scheffe test was used to post hoc test