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Table 2 Daily average specimen numbers for EID testing as well as cost savings at varying pool sizes, per annum, Division of Medical Virology, National Health Laboratory Service Tygerberg and Stellenbosch University

From: Pooled PCR testing of dried blood spots for infant HIV diagnosis is cost efficient and accurate

Year

Mean (SD) daily number of samples

Positivity rate (%)

% Cost saved (95% CI)

% Batched runs saved (95% CI)

Pool size = 2

Pool size = 5

Pool size = 2

Pool size = 5

2009

39 (26)

10.0

32 (31.7–32.3)

41 (40.1–42)

32 (31.2–32.8)

29.3 (27.7–31)

2010

35 (17)

9.0

34 (33.7–34.3)

44.3 (43.3–45.2)

31.1 (30.3–31.9)

28.8 (27–30.6)

2011

36 (18)

6.8

39.6 (39.4–39.8)

52.8 (52–53.5)

31.1 (30.4–32)

32.2 (30.7–33.8)

2012

40 (17)

5.1

43.1 (43–43.3)

59.7 (59.2–60.3)

37.2 (36.6–37.9)

40.4 (39.2–41.5)

2013

48 (21)

3.6

44.2 (44.1–44.4)

64.3 (63.9–64.7)

40 (39.5–40.4)

51.2 (50.4–52.1)

2014

55 (19)

4.3

42.6 (42.5–42.7)

61 (60.6–61.5)

39.8 (39.3–40.3)

50.9 (49.8–51.9)

2015

67 (26)

3.6

43.3 (43.3–43.5)

63.5 (63.1–64)

40.8 (40.4–41.3)

54.5 (53.3–55.7)

Overall

45 (23)

5.7

 
  1. SD Standard deviation, CI Confidence interval