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Table 4 Characteristics of patients retained compared to all patients enrolled

From: Strategies for recruitment and retention of underrepresented populations with chronic obstructive pulmonary disease for a clinical trial

 

Enrolled

(n = 192)

Completed study

(n = 158)

Did not complete study (n = 34)

P-value*

At enrollment

 Age, in years, mean (sd)

61.3 (7.6)

61.3 (7.5)

61.1 (8.5)

p = .92

 Male, % (n/N)

65.5 (126/192)

63.9% (101/158)

73.5% (25/34)

p = .29

Preferred Language

 English, % (n/N)

87.4% (167/191)

86.6% (136/157)

91.2% (31/34)

p = .47

 Spanish, % (n/N)

9.4% (18/191)

10.2% (16/157)

5.9% (2/34)

p = .44

 Other, % (n/N)

3.1% (6/191)

3.2% (5/157)

2.9% (1/34)

p = .94

Race

 African-American, % (n/N)

56.7% (109/192)

55.7% (88/158)

61.8% (21/34)

p = .52

 White, % (n/N)

21.3% (41/192)

20.9% (33/158)

23.5% (8/34)

p = .73

 Asian, % (n/N)

3.6% (7/192)

4.4% (7/158)

0.0% (0/34)

p = .21

 Other, % (n/N)

16.1% (31/192)

19.0% (30/158)

14.7% (5/34)

p = .56

 Ethnicity- Latino/Hispanic, % (n/N)

16.7% (32/192)

17.7% (28/158)

11.8% (4/34)

p = .40

 Substance use, % (n/N)

28.6% (55/192)

26.6% (42/158)

38.2% (13/34)

p = .17

 PHQ score ≥ 15, % (n/N)

15.7% (30/192)

16.6% (26/158)

11.8% (4/34)

p = .49

 < High school education, % (n/N)

31.9% (61/191)

31.9% (50/157)

32.4% (11/34)

p = .95

 Limited health literacy**, % (n/N)

37.2% (71/191)

39.5% (62/157)

26.5% (9/34)

p = .15

 FEV1 < 50% predicted

38.8% (59/152)

38.0% (49/129)

43.5% (10/23)

p = .62

 Gold category D, % (n/N)

46.3% (88/190)

45.2% (71/157)

51.5% (17/33)

p = .51

During study period

 >  1 hospitalization, % (n/N)

25.0% (48/192)

22.2% (35/158)

38.2% (13/34)

p < 0.05

 >  1 hospitalization for COPD, % (n/N)

18.2% (35/192)

17.7% (28/158)

20.6% (7/34)

p = .69

 Uses oxygen at home, % (n/N)

18.3% (35/191)

14.7% (23/157)

35.3% (12/34)

p < 0.005

  1. *For completed study vs did not complete study
  2. **Needs someone to help read medial information at least a little of the time