Table 3.

Multivariable adjusted association between counseling and postpartum diabetes screening

Primary outcome: Postpartum diabetes screening

Sample population frequency= 556

Weighted population frequency=18234

	Model 1 OR (95% CI)1	Model 2 AOR (95%CI) 2	Final model AOR (95%CI)3	Final model (P value)4
Counseling on 3 v. 0–1 topics	3.5 (1.6–7.4)	3.0 (1.4–6.5)
Counseling on 2 v. 0–1 topics	2.4 (1.0–5.6)	2.1 (0.9–5.3)
Counseling on 3 v. 2 topics	1.5 (0.8–2.7)	1.4 (0.7–2.7)
WIC during pregnancy		0.5 (0.3–0.9)	0.5 (0.3–0.9)	0.02
Advanced maternal age (35+)		2.1 (1.2–3.6)	2.2 (1.2–3.8)	0.007
Primiparity		2.1 (1.2–3.7)	2.2 (1.2–4.1)	0.008
White non-Hispanic		reference
Black non-Hispanic		3.1 (1.2–8.3)
Asian/Pacific Islander		1.6 (0.8–3.2)
Hispanic		1.3 (0.7–2.6)
Counseling on 3 v. 0–1 topics among white non-Hispanic women			4.6 (1.2–17.3)	0.02
Counseling on 3 v. 0–1 topics among black non-Hispanic women			18.3 (1.9–181.2)	0.01
Counseling on 3 v. 0–1 topics among Asian/Pacific Islander women			11.5 (2.1–62.9)	0.005
Counseling on 3 v. 2 topics among Asian/Pacific Islander women			10.2 (2.0–52.8)	0.006
Counseling on 3 v. 0–1 topics among Hispanic women			1.2 (0.4–3.7)	0.79
Model fit statistics
AIC	24427	22982	22349
- 2 Log Likelihood	24421	22962	22313
Degrees of Freedom	2	9	17
P value5	<0.001	<0.001	<0.001

Abbreviations: AOR, Adjusted Odds Ratio; CI, Confidence Interval; OR, Odds Ratio

¹Model 1 is unadjusted

²Model 2 is adjusted for WIC status, advanced maternal age, parity, race/ethnicity (this was created with sequential addition of the relevant covariates –intervening models not shown)

³Final model incorporates interaction term between counseling and race/ethnicity

⁴P value from multivariable logistic regression analysis of maximum likelihood estimates with statistical significance at p<0.05

⁵P value from likelihood ratio with second order Rao Scott design correction comparing larger model to smaller model with statistical significance at p<0.05