Table 1.

The relationship of demographic characteristics and β-hCG and PAPP-A with adverse pregnancy outcomes

	Preeclampsia			Preterm labor			Abortion			Low birth weight
	Yes (n = 73)	No (n = 921)	p value	Yes (n = 77)	No (n = 899)	p value	Yes (n = 18)	No (n = 976)	p value	Yes (n = 60)	No (n = 916)	p value
Age	28.89 ± 6.71	27.64 ± 6.07	0.209	28.51 ± 7.07	27.59 ± 5.94	0.017	31.94 ± 9.33	27.66 ± 6.03	0.000	28.78 ± 6.56	27.6 ± 5.99	0.568
Parity			0.321			0.373			0.091			0.314
Primiparous	42 (7.8%)	497 (92.2%)		44 (8.2%)	495 (91.8%)		6 (1.1%)	533 (98.9%)		35 (6.6%)	496 (93.4%)
Multiparous	31 (6.8%)	424 (93.2%)		33 (7.3%)	422 (92.7%)		11 (2.4%)	444 (97.6%)		25 (5.6%)	419 (94.4%)
BMI	27.74 ± 4.92	25.57 ± 4.12	0.061	26.08 ± 4.60	25.69 ± 4.19	0.714	26.29 ± 4.01	25.72 ± 4.23	0.92	26.47 ± 4.38	25.68 ± 4.21	0.514
PAPP-A	0.61 ± 0.46	1.14 ± 0.69	0.000	0.77 ± 0.59	1.13 ± 0.69	0.000	0.96 ± 0.65	1.10 ± 0.69	0.491	0.78 ± 0.64	1.12 ± 0.69	0.000
β-hCG	1.18 ± 1.35	1.09 ± 0.74	0.839	1.17 ± 1.39	1.09 ± 0.73	0.156	0.92 ± 0.86	1.10 ± 0.80	0.112	1.32 ± 1.53	1.08 ± 0.72	0.764