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Table 2 Comparison of the data of HPV 52 and 16 in the first 20 batches and all 466 batches

From: A unique Levey–Jennings control chart used for internal quality control in human papillomavirus detection

HPV type 52 16
Frequency 862 573
Batches 466 466
Means of the positive rates 3.66% 2.38%
SD 2.80% 2.19%
Means of the first 20 batches positive rates 3.24% 2.34%
SD 2.20% 2.29%
t-test, P-values 0.409 > 0.05 0.942 > 0.05