Clinical Study

A Randomized, Double-Blind, Placebo-Controlled, Multicentre Trial of the Effects of a Shrimp Protein Hydrolysate on Blood Pressure

Table 1

Demographic and lifestyle characteristics of the placebo and RPC groups in the ITT population (n=144).

FactorPlacebo (n = 72)RPC (n=72)p-

Age (years)
 Mean ± SD54.9 ± 10.855.1 ± 9.8
 Median (Min – Max)55 (33 – 72)56.5 (32 – 73)
Location [n ()]
 North America24 (33%)23 (32%)0.954
 Czech Republic31 (43%)30 (42%)
 Germany17 (24%)19 (26%)
Gender [n ()]
 Female28 (39%)34 (47%)0.400
 Male44 (61%)38 (53%)
Alcohol Use [n ()]
 None14 (19%)13 (18%)0.618
 Occasionally42 (58%)40 (56%)
 Weekly13 (18%)18 (25%)
 Daily3 (4%)1 (1%)
Smoking Status [n ()]
 Current Smoker1 (1%)0 (0%)1.000
 Ex-Smoker12 (17%)13 (18%)
 Non-Smoker59 (82%)59 (82%)
Race [n ()]
 Black or African American1 (1%)3 (4%)0.232
 Central American0 (0%)2 (3%)
 Eastern European White31 (43%)32 (44%)
 Middle Eastern0 (0%)1 (1%)
 North American Indian/Aboriginal0 (0%)1 (1%)
 South American0 (0%)1 (1%)
 South Asian5 (7%)1 (1%)
 Western European White35 (49%)31 (43%)
Ethnicity [n ()]
 Hispanic or Latino0 (0%)4 (6%)0.120
 Not Hispanic or Latino72 (100%)68 (94%)
Status [n ()]
 Completed69 (96%)69 (96%)1.000
 Dropout/Withdrew3 (4%)3 (4%)

ITT: intention-to-treat; Max: maximum; Min: minimum; n: number; RPC: Refined Peptide Concentrate; SD: standard deviation
-group comparisons were made using Fisher’s Exact Test, unless otherwise stated. p≤0.05 was considered statistically significant.
-group comparison was made using the Independent Student’s t-test.