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Table 4 Results of drug testing by year of admission

From: Substance use during pregnancy: impact on Colorado community hospital

Year 2013 2014 2015 2016 2017
Total number of patient visits on Maternity Unit 4952 5035 4986 5112 4930
Total number of toxicology screens performed 308 334 411 517 640
Total participants who were screened and tested positive to drugs 103 149 208 245 321
Percentage of screened patients who tested positive to drugsa 33.4% 44.6% 50.6% 47.4% 50.2%
Participants tested positive to multi-substances 17 39 38 58 72
Percentage of those testing positive to drugs who tested positive to multi-substances 16.5% 26.2% 18.3% 23.7% 22.4%
Participants tested positive to multi-substances, including cannabis 7 24 18 34 29
Percentage of multi-substance which included cannabis 41.0% 61.5% 47.0% 58.6% 40.3%
  1. The results include the drug testing for both mothers and newborns
  2. a The increase in the percentage of patients who tested positive over the years is statistically significant (χ2 = 17.93, df = 1, p < 0.001) using the Cochran-Armitage test for a trend in proportions