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Table 2 Baseline demographic characteristics of participants by study arm

From: High dose versus low dose standardized cranberry proanthocyanidin extract for the prevention of recurrent urinary tract infection in healthy women: a double-blind randomized controlled trial

Demographic characteristics

Low dose group, 2 × 1 mg

PAC (n = 73)

High dose group, 2 × 18.5 mg

PAC (n = 72)

P*

Age (mean ± SD)**,***

32.5 ± 14.2

27.2 ± 8.8

0.009

Age subgroup, years, n (%)

  

0.028

 18–24 years

30 (41.1)

37 (51.4)

 

 25–44 years

29 (39.7)

31 (43.1)

 

  > 45 years

14 (19.2)

4 (5.6)

 

Age subgroup, years, n (%)

  

0.003

 18–51 years

62 (84.9)

71 (98.6)

 

  > 51 years

11 (15.1)

1 (1.4)

 

Ethnic origin

  

0.681

  Caucasian

65 (89.0)

65 (90.3)

 

 Non-Caucasian

6 (8.2)

5 (6.9)

 

 Biracial

2 (2.7)

2 (2.8)

 

Marital status

  

0.230

 Single

25 (34.3)

26 (36.1)

 

 Common law

33 (45.2)

39 (54.2)

 

 Married

13 (17.8)

7 (9.7)

 

 Divorced

2 (2.7)

0 (0)

 

Has children

21 (28.7)

12 (16.7)

0.082

Living environment

  

0.998

 Urban

50 (68.5)

49 (68.1)

 

 Suburban

18 (24.7)

18 (25)

 

 Rural

5 (6.9)

5 (6.9)

 

Education

  

0.814

 University

39 (53.4)

42 (58.3)

 

 College

28 (38.4)

24 (33.3)

 

 Secondary school

6 (8.2)

6 (8.3)

 
  1. *Comparability of numerical and categorical baseline characteristics between groups was assessed with a student’s t-test and ANOVA and chi-squared tests, respectively
  2. **Numbers represent frequency (%) unless otherwise indicated
  3. ***Significant difference between groups (student t-test, p = 0.009)