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Table 5 Correlation between PGI-I and other BPH Measures (change from baseline) across race, ethnicity and baseline severity

From: Construct validation of patient global impression of severity (PGI-S) and improvement (PGI-I) questionnaires in the treatment of men with lower urinary tract symptoms secondary to benign prostatic hyperplasia

Spearman’s Correlation n IPSS IPSS-QoL BII Qmax
Asian 747 0.55** 0.52** 0.43** −0.15**
Caucasian 816 0.57** 0.54** 0.49** −0.13**
  Hispanic Caucasian 158 0.65** 0.45** 0.49** −0.15
  Non-Hispanic Caucasian 658 0.55** 0.54** 0.49** −0.14*
Moderate LUTS 1050 0.53** 0.52** 0.44** −0.12**
Severe LUTS 577 0.62** 0.54** 0.51** −0.19**
  1. Asian: from the 2 studies conducted in Asia; Caucasian: from the 2 studies conducted outside Asia.
  2. PGI-I: Patient Global Impression of Improvement; IPSS: International Prostate Symptom Scores; IPSS QoL: IPSS-Quality of Life (QoL), BII - Benign Prostatic Hyperplasia Impact Index; Qmax: peak urine flow rate; LUTS: Lower Urinary Tract Symptoms; n: number of patients. **: p<0.001; *: p<0.05.