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Table 3 Summary of participants enrolled and cost breakdown, by recruitment strategy

From: Cost analysis and efficacy of recruitment strategies used in a large pragmatic community-based clinical trial targeting low-income seniors: a comparative descriptive analysis

Recruitment strategy

Number of enrolled N (% of total enrolled, 95% CI)

Supplies and services cost ($CAD)

Human resources cost ($CAD)

Total cost ($CAD)

Cost per enrolled $CAD/participant

Health care

1527 (38%, 37–40)

66,690

91,910

158,600

104

 Pharmacies

1217 (30%, 29–32)

63,500

91,480 a

154,980

128

 Health professionals

310 (7.7%, 6.9–8.6)

3190

430 a

3620

12

Paper mail

1358 (34%, 32–35)

90,770

15,370

106,140

78

 Canada Post mail-out (n = 122,000)

198 (4.9%, 4.3–5.7)

39,400

300 a

39,700

201

 Coronary angiogram registry (n = 4780)

630 (16%, 15–17)

4780

12,670b

17,450

28

 Contact after hospital discharge (n = 50,042)

530 (13%, 12–14)

46,590

2400b

48,990

92

Media

350 (8.7%, 7.9–9.6)

66,610

2940

69,550

199

 Paid media

85 (2.1%, 1.7–2.6)

66,610

2040

68,650

808

  Paid radio

13 (0.32%, 0.19–0.55)

11,850

120

11,970

921

  Facebook

2 (0.050%, 0.014–0.018)

10,200

300a

10,500

5250

 Hospital programming channel

8 (0.20%, 0.10–0.39)

10,220

600a

10,820

1353

  Transit advertising

26 (0.65%, 0.44–0.95)

23,040

120

23,160

891

  Print media

36 (0.90%, 0.65–1.2)

11,300

900a

12,200

339

 Unpaid media

265 (6.6%, 5.9–7.4)

0

900a

900

3

Seniors outreach

252 (6.3%, 5.6–7.1)

12,380

4260

16,640

66

 Senior’s homes/apartments

74 (1.8%, 1.5–2.3)

5690

4100a

9790

132

 Senior’s aid resources

178 (4.4%, 3.9–5.2)

6690

160a

6850

38

Word of mouth

476 (12%, 11–13)

2200

1200

3400

7

TOTAL

4013

238,650

115,680

354,330

88

  1. aCost calculated using research assistant salary at approximately $30 CAD/h
  2. bCost calculated using research coordinator salary at approximately $60CAD/h