Journal of Hematology, ISSN 1927-1212 print, 1927-1220 online, Open Access
Article copyright, the authors; Journal compilation copyright, J Hematol and Elmer Press Inc
Journal website http://www.thejh.org

Original Article

Volume 9, Number 1-2, April 2020, pages 9-12


Factors Associated With Umbilical Cord Blood Collection Quality in Japan

Tables

Table 1. Results of Univariate Logistic Regression Analyses Concerning the Association Between Possible Factors of UCB Collection Methods and the UCB Quality (Presence or Absence of Clots)
 
Factor of UCB collectionPresence of clotsP valueCrude ORs95% CI
NoYes
OR: odds ratio; CI: confidence interval; UCB: umbilical cord blood.
Collection during vaginal delivery only
  Yes1,1214070.670.9630.82 - 1.1
  No1,010353
  Missing data00
Clamp the tube to prevent air contamination
  Yes1,3795170.340.8960.71 - 1.1
  No333111
  Missing data460136
Puncture with needle hole facing up
  Yes1,7381540.031.471.0 - 2.0
  No39351
  Missing data0545
Puncture the umbilical cord near the placenta
  Yes1,325567< 0.010.6190.48 - 0.79
  No35193
  Missing data455100
Puncture the thick part of the Walton Jelly
  Yes1,1462820.071.210.99 - 1.5
  No248746
  Missing data73714
Single puncture only
  Yes1,307585< 0.011.451.2 - 1.8
  No269175
  Missing data5550
Continuous massage of the uterine fundus during collection
  Yes1,3835090.191.160.93 - 1.5
  No311133
  Missing data161118
Avoid squeezing the umbilical cord
  Yes42618< 0.013.242.0 - 5.3
  No1,685212
  Missing data25530
In utero collection only
  Yes1,2985940.061.230.99 - 1.53
  No384160
  Missing data5496
Continuous stirring of the bag during collection
  Yes1,5383540.090.6910.42 - 1.1
  No36775
  Missing data226336

 

Table 2. Results of Multivariate Logistic Regression Analyses Concerning the Association Between Possible Factors of UCB Collection Methods and the UCB Quality (Presence or Absence of Clots)
 
Factor of umbilical cord blood collectionP valueAdjusted ORs95% CI
OR: odds ratio; CI: confidence interval; UCB: umbilical cord blood.
Puncture the umbilical cord near the placenta0.091.020.91 - 1.2
Puncture with needle hole facing up0.0521.410.98 - 1.8
Single puncture only0.011.801.3 - 5.4
Avoid squeezing the umbilical cord0.111.290.91 - 1.8