Table 3.

Associations Between Preconception Care Indicators and Preterm Delivery

	Entire Sample	Term Delivery	Preterm Delivery	P value	Preterm OR	95% CI
Contraception counseling (n = 652)				0.16^*
Yes (REF)	233	164 (70.4)	69 (29.6)		---	---
No	419	272 (64.9)	147 (35.1)		1.29	0.91-1.82
Prim care encounter ≤2 Years (n = 663)				0.50^*
Yes (REF)	481	317 (65.9)	164 (34.1)		---	---
No	182	125 (68.7)	57 (31.3)		0.88	0.61-1.27
Multivitamin education (n = 620)				0.28^*
Yes (REF)	73	45 (61.6)	28 (38.4)		---	---
No	547	372 (68.0)	175 (32.0)		0.76	0.46-1.25
Tobacco avoidance counseling (n = 657)				0.40^*
Yes (REF)	75	47 (62.7)	28 (37.3)		---	---
No	582	393 (67.5)	189 (32.5)		0.81	0.49-1.33
Depression screening (n = 161)				0.30^*
Negative (REF)	140	96 (68.6)	44 (31.4)		---	---
Positive	21	12 (57.1)	9 (42.9)		1.64	0.64-4.17
BMI (n = 475)				0.07^*
BMI >18 and <30 (REF)	298	206 (69.1)	92 (30.9)		---	---
BMI ≤18 and ≥30	177	108 (61.0)	69 (39.0)		1.43	0.97-2.11
STI Risk (n = 663)				0.51^*
Low risk (REF)	518	342 (66.0)	176 (34.0)		---	---
High risk	145	100 (69.0)	45 (31.0)		0.87	0.59-1.30
A1c goal counseling (n = 27)				0.53^†
Yes (REF)	3	0 (0.0)	3 (100.0)		---	---
No	24	9 (37.5)	15 (62.5)		n/a	n/a
Teratogenic med counseling (n = 658)				0.72^*
Yes (REF)	16	10 (62.5)	6 (37.5)		---	---
No	642	429 (66.8)	213 (33.2)		0.83	0.30-2.31
Blood pressure (n = 488)				0.002^*
<120/80 (REF)	287	204 (71.1)	83 (28.9)		---	---
≥120/80	201	115 (57.2)	86 (42.8)		1.84	1.26-2.68
Substance use counseling (n = 659)				0.16^*
Yes (REF)	60	45 (75.0)	15 (25.0)		---	---
No	599	396 (66.1)	203 (33.9)		1.54	0.84-2.83

↵* Chi-square test-of-independence.
↵† Fisher’s Exact test. Highlighted values indicate statistical significance.
Abbreviations: OR, Odds ratio; REF, Reference; Prim, Primary; BMI, Body mass index; STI, Sexually transmitted infection; Med, Medication.