Alcohol and Other Drug Use during Pregnancy among Women Attending Midwife Obstetric Units in the Cape Metropole, South Africa

Table 5

Prevalence of alcohol and other drug use among the sub-sample (𝑛=684): Urinalysis.

	Response*	%	SE	95% CI
Lost samples		12.2	1.3	9.6–14.7
Positive for drugs	Yes**	18.9	1.6	15.8–22.1
	No	68.9	1.9	65.3–72.6
Met standardized drug cut-off	Yes	8.8	1.1	6.7–10.9
	No	79.1	1.6	75.9–82.2
Positive for alcohol	Yes***	19.9	1.7	16.6–23.1
	No	67.6	1.9	64.0–71.2
Met standardized alcohol cut-off	Yes	19.6	1.7	16.3–22.8
	No	67.9	1.8	64.3–71.5
Positive for either drugs or alcohol	Yes	33.5	2.0	29.7–37.4
	No	54.3	2.0	50.4–58.2
Met standardized cut-off for drugs or alcohol	Yes	25.8	1.8	22.2–29.4
	No	62.0	1.9	58.2–65.9
Polydrug use****	No drugs	68.9	1.9	65.3–72.6
	1 drug	15.8	1.5	12.9–18.8
	>1 drug	3.1	0.6	1.9–4.3

∗34 women have no urine data and 61 have no alcohol and methamphetamine data due to the specimens having been inadvertently destroyed; **70 of these women were not classified as positive according to standardized cut-off levels; ***2 of these women were not classified as positive according to standardized cut-off levels; ****refers to the use of more than one illicit drug and excludes alcohol.