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["Table 3. Comparison of nucleic acid tests between the CUD group and the non-CUD group"]
["Item1","CUD group\n (n = 538)","Non-CUD group\n  (n = 645)","Test value2","P-value"]
["Total number of nucleic acid tests","2.65 ± 1.14","2.63 ± 1.08",-0.35,{"v":0.73,"d":"0.730"}]
["Total number of positive nucleic acid test results","0.26 ± 0.60","0.23 ± 0.57",-1.05,0.294]
["Total number of negative nucleic acid test results","2.39 ± 0.83","2.40 ± 0.76",0.29,0.772]
["1Measurement data are presented as mean ± standard deviation. Independent samples t-test was used for statistical test. \n2The t value is shown in each item. "]

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