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. Author manuscript; available in PMC: 2013 Jun 1.
Published in final edited form as: Transfusion. 2012 Jan 10;52(6):1221–1227. doi: 10.1111/j.1537-2995.2011.03476.x

Table 5.

The CCI of unmanipulated and corrected washed APs (+) as a function of time post transfusion

0–2 hrs 2–8 hrs 8–14 hrs 14–20 hrs 20–24 hrs
Unmanipulated APs
(n=3139)
Mean (SD)		 6016.7 (4086.4) 4126.9 (3115.9) 2798.2 (2886.3) 2331.7 (2795.7) 1665.6 (2028.6)
Washed APs
(n=3611)
Mean (SD)		 4756.3 (3449.7) 3355.7 (3045.2) 1954.6 (2364.3) 1603.3 (2335.6) 988.1 (1664.4)
Percent change in
CCI (unmanipulated
vs. washed)
Mean (%)		 −20.9*** −18.7*** −30.1*** −31.2*** −40.7***
***

P < 0.001

(+)

The corrected mean was calculated by adding 20% to the washed calculated CCI to account for the platelet loss due to the manipulation process.