Helicobacter pylori Exposure in Nausea and Vomiting of Pregnancy Increases Risk of Preterm Delivery

Table 2

Vomiting in pregnancy and H. pylori test results vary by race/ethnicity and type of health insurance. Subject numbers are shown for the University of Washington Medicine Discovery cohort. The presence of an ICD code indicating vomiting in pregnancy and result of H. pylori testing within 5 years of pregnancy each varied by race/ethnicity and health insurance type. Race and ethnicity are as reported by the patient, and one patient may be counted in multiple categories. Age differences are tested with the Kruskal-Wallis test, and race/ethnicity and health insurance differences are tested with a Chi-square test.

	Vomiting in pregnancy			H. pylori test result
	Yes	No		Positive	Negative	None
Subjects,	2750	9128	NA	151	181	11546	NA
Age median years (quartiles)	32 (27–36)	33 (29–37)	0.5	32 (28–37)	34 (29–37)	32 (28–36)	0.01
Race and ethnicity^†(self-declared),			<0.001				<0.001
American Indian/Alaska Native	26	104		1	0	129
Asian	458	1855		28	31	2254
Black	560	1040		46	28	1526
Latino	253	721		6	11	957
Native Hawaiian/Pacific Islander	41	103		1	1	142
White	1513	5417		31	77	6876
Unknown	106	495		6	4	591
Health insurance type,			<0.001				<0.001
Commercial	691	2412		21	32	3050
Medicaid	529	1115		41	20	1583
Medicare	9	22		0	1	30
Other/unknown	1482	5538		51	85	6883

^†Subjects declaring multiple races or ethnicities are counted in multiple categories.