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Table 5 Socioeconomic class (based on the ABEP scale), stratified by study phase (N=80)

From: Motives for participating in a clinical research trial: a pilot study in Brazil

Socioeconomic class

Phase I (n=40)

Phase III (n=40)

 
 

n (%)

n (%)

p-value1

A

0 (0)

0 (0)

< 0.0005

B

11 [25]

4 [10]

 

C

28 (70)

24 (60)

 

D

1 (2.5)

9 (22.5)

 

E

0 (0)

3 (7.5)

 
  1. 1Fisher’s exact test.
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BMC Public Health

ISSN: 1471-2458

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