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. 2017 Jan 20;12(1):e0170211. doi: 10.1371/journal.pone.0170211

Fig 3. Pre-analytical error comparison at selected Sulaimani City hospitals.

Fig 3

The difference between the relative frequencies of errors observed in hospitals was tested using a proportional Z test. The Central lab had the lowest error rate (17%), while the Shorsh hospital had the highest error rate (21.9%). There were no significant differences between the frequencies of the pre-analytical errors between the ten different hospitals, P = 0.231. The Fig 3 data is available as S3 Data.