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Table 2 Effect of time on erythrocyte sedimentation rate at 4 °C storage of blood samples

From: Effect of storage temperature and time on erythrocyte sedimentation rate

 

Baseline mean (SD)

Follow-up mean (SD)

Change in mean (%)

Pa

ESR (2 h), mm/h

61.53 (17.70)

60.21 (16.94)

− 2.15

NS

61 (29–105)

60 (29–103)

ESR (4 h), mm/h

61.53 (17.70)

59.75 (19.67)

− 2.90

NS

61 (29–105)

59 (28–101)

ESR (6 h), mm/h

61.53 (17.70)

58.13 (15.98)

− 5.52

NS

61 (29–105)

58 (27–98)

ESR (8 h), mm/h

61.53 (17.70)

56.37 (18.37)

− 8.39

NS

61 (29–105)

56 (25–95)

ESR (12 h), mm/h

61.53 (17.70)

52.68 (16.88)

− 14.38

0.021

61 (29–105)

52 (23–88)

ESR (24 h), mm/h

61.53 (17.70)

49.05 (15.32)

− 20.28

0.007

61 (29–105)

48 (21–83)

  1. aWilcoxon signed-rank test