Table 1:

Demographics of birthing patients who use cannabis vs who did not use cannabis in California (2007–2011)

	Total	Birthing patients with cannabis use disorder	Birthing patients who do not use cannabis	P*
	N=2,380,446	N=9,144	N=2,371,302
Race and ethnicity
Non-Hispanic white	622,308 (26.4%)	3,543 (39.3%)	618,765 (26.4%)	<0.001
Non-Hispanic Black	120,247 (5.1%)	1,990 (22.1%)	118,257 (5.0%)
Hispanic	1,279,780 (54.4%)	2,754 (30.5%)	1,277,026 (54.5%)
Asian	280,279 (11.9%)	118 (1.3%)	280,161 (11.9%)
AIAN	7,089 (0.3%)	132 (1.5%)	6,957 (0.3%)
Other/Multiracial	44,368 (1.9%)	484 (5.4%)	43,884 (1.9%)
Maternal age
<20 years	216,398 (9.1%)	1,539 (16.8%)	214,859 (9.1%)	<0.001
20–34 years	1,751,538 (73.6%)	6,969 (76.2%)	1,744,569 (73.6%)
>=35 years	412,444 (17.3%)	636 (7.0%)	411,808 (17.4%)
No college education	1,200,296 (52.2%)	6,459 (73.3%)	1,193,837 (52.1%)	<0.001
Pre-pregnancy BMI
Mean (Range)	25.8 (10.5–167.5)	25.8 (13.2–71.8)	25.8 (10.5–167.5)	0.50
Underweight	89,925 (4.1%)	547 (6.5%)	89,378 (4.1%)	<0.001
Normal	1,092,829 (50.1%)	4,025 (48.1%)	1,088,804 (50.1%)
Overweight	560,723 (25.7%)	1,985 (23.7%)	558,738 (25.7%)
Obese	437,627 (20.1%)	1,804 (21.6%)	435,823 (20.1%)
Public insurance	1,204,790 (52.0%)	7,357 (80.5%)	1,197,433 (51.9%)	<0.001
Nulliparous	943,659 (39.7%)	3,889 (42.8%)	939,770 (39.7%)	<0.001
Cigarette smoker during pregnancy	73,588 (3.1%)	2,382 (26.0%)	71,206 (3.0%)	<0.001
Prenatal visits (less than five total visits)	55,371 (2.4%)	1,365 (15.6%)	54,006 (2.3%)	<0.001
Alcohol use	2,487 (0.1%)	412 (4.5%)	2,075 (0.1%)	<0.001
Other Substance use	4,087 (0.2%)	597 (6.5%)	3,490 (0.1%)	<0.001
Chronic hypertension	21,072 (0.9%)	121 (1.3%)	20,951 (0.9%)	<0.001
Pre-existing diabetes	22,771 (1.0%)	80 (0.9%)	22,691 (1.0%)	0.42

^*Chi-square test/two-sample t-test

BMI-Body mass index, AIAN- American-Indian Alaskan-Native

All the demographics were captured using vital statistics data, but alcohol use, other substance use, chronic hypertension and pre-existing diabetes were determined using ICD-9 codes.