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. Author manuscript; available in PMC: 2012 Sep 28.
Published in final edited form as: JAMA. 2011 Sep 28;306(12):1344–1351. doi: 10.1001/jama.2011.1364

Table 2.

Change in Primary and Secondary Outcome Measures from Baseline to Week 72

Outcome Measure Saw Palmetto (N=176) Placebo (N=181)
Baseline
Mean
Week 72
Mean
Change -
Mean
(95% CI)
Baseline
Mean
Week 72
Mean
Change -
Mean
(95% CI)
P-value
(1-sided)
Primary
   AUASI score 14.42 12.22 −2.20
(−3.04, −0.36)
14.69 11.70 −2.99
(−3.81, −2.17)
0.91
Secondary
   BPH Impact Index 3.43 2.62 −0.81
(−1.16. −0.46)
3.70 2.47 −1.23
(−1.60, −0.87)
0.95
   AUASI QOL 3.20 2.86 −0.34
(−0.52, −0.16)
3.23 2.74 −0.49
(−0.67, −0.31)
0.87
   AUA Nocturia 2.09 1.84 −0.36
(−0.72, 0)
2.26 1.78 −0.15
(−0.44, 0.13)
0.19
   Peak flow rate (mL/sec) 15.03 14.84 −0.18
(−1.07, 0.70)
14.78 13.99 −0.79
(−1.58, 0)
0.84
   Post-void residual (mL)* 37.5 44.5 4.78
(−30.00, 52.00)
43.00 42.00 1.17
(−33.00, 34.00)
0.31*
   PSA level (ng/ml) 2.20 2.41 0.32
(−0.08, 0.73)
1.93 2.07 −0.19
(−0.53, 0.14)
0.97
   IIEF erectile scale 18.81 18.29 −0.52
(−1.63, 0.59)
19.92 18.86 −1.06
(−2.11, −0.02)
0.76
   MSHQ-EjD scale 10.56 10.18 −0.38
(−1.04, 0.28)
11.18 11.09 −0.09
(0.63, 0.45)
0.25
   ICSmaleIS score 3.44 2.96 −0.48
(−0.80, −0.16)
4.17 3.32 −0.84
(−1.17, −0.51)
0.94
   Jenkins sleep scale 6.96 6.15 −0.80
(−1.34, −0.27)
7.75 6.12 −1.63
(−2.25, −1.01)
0.98
   NIH-CPSI scales
     Pain* 0 0 0
(−0.08, 0)
0 0 0
(−1.00, 0)
0.20*
     Urinary symptom 4.02 3.67 −0.35
(−0.67, −0.03)
4.27 3.41 −0.86
(−1.22, −0.49)
0.98
     QOL 4.45 3.61 −0.85
(−1.16, −0.53)
4.57 3.49 −1.08
(−1.39, −0.77)
0.85
*

Median and interquartile range shown, P-value based on Wilcoxon rank sum test.