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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