Table 3. Independent predictors of pregnancy outcomes.

Predictor	Univariate			Adjusted1
	Odds ratio	95% CI	P-value	Odds ratio	95% CI	p-value
Diagnosis			<.001			<.001
Normal chromosomes	1			1
Aneuploidy	304.50	250.98–369.44	<.001	437.40	348.19–549.46	<.001
Other anomaly	97.00	72.43–129.91	<.001	95.94	69.21–133.01	<.001
Year			<.001			.972
2000–2003	1			1
2004–2007	1.27	1.12–1.44	<.001	0.98	0.79–1.22	.874
2008–2011	1.37	1.20–1.55	<.001	0.97	0.78–1.22	.815
Age
<35	1			1
≥35	0.59	0.53–0.65	<.001	0.35	0.28–0.42	<.001
SIMD			.001			.221
1 (least affluent)	1			1
2	0.98	0.81–1.18	.822	1.24	0.91–1.70	.174
3	0.73	0.60–0.88	.001	0.88	0.64–1.21	.434
4	0.77	0.64–0.92	.003	0.99	0.73–1.34	.934
5 (most affluent)	0.84	0.71–0.99	.040	1.10	0.82–1.47	.538
Parity						.037
0	1			1
1	0.81	0.72–0.92	.001	0.86	0.70–1.06	.159
≥2	0.79	0.69–0.90	.001	0.73	0.58–0.93	.011

CI confidence interval; SIMD Scottish Index of Multiple Deprivation.

¹Adjusted for diagnosis, year of testing, maternal age, SIMD quintiles, parity