Table I.

Demographics and Clinical Characteristics of all patients.

	Thrombocytopenia N=9	HELLP N=11	Preeclampsia N=11	p-values*
Age (years)	29.7 +/- 7.8	32 +/- 6.7	30.5 +/- 5.4	NS
Parity	.9 +/- 1.1	0.4 +/- 0.5	1.2 +/- 1.5	NS
GA (weeks)	38.2 +/-3.6	30.3 +/- 7.1	32.0 +/- 2.8	0.007, <0.001
BMI	29.5 +/- 3.2	30.8 +/- 8.4 §	29.5 +/- 4.3	NS
SBP (mm Hg)	116 +/- 10	166 +/- 22	160 +/- 19	<0.001, <0.001
DBP (mm Hg)	71 +/- 9	103 +/- 13	95 +/- 8	<0.001, <0.001
Hematocrit (%)	33.8 +/- 2.6	35.1 +/- 1.9	33.5 +/- 3.1	NS
Uric Acid in mg/dl)	5.2 +/- 1.2	6.7 +/- 0.7	6.6 +/- 1.0	NS, 0.04
Creatinine (mg/dl)	0.5 +/- 0.1	0.7 +/- 0.2	0.7 +/- 0.3	NS
PLT	102 +/- 40	105 +/- 35	251 +/- 71	NS, <0.001
ALT	13 +/- 4.3	450 +/- 1118 (urine P:C ratio)	23 +/- 13	NS
Urine analysis	¥ see note	5.0 +/- 8.8	3.3 +/- 4.3
Birth Weight (gms)	3527 +/- 532	1762 +/- 1070	1869 +/- 828	0.0004, 0.0001

Mean ± standard deviation. GA = gestational age, BMI = body-mass index (kg/m²), SBP = systolic blood pressure DBP = diastolic blood pressure PLT = platelets × 10³ / mm²⁻ AST = aspartate transaminase

^*p-value of Thrombocytopenia vs. HELLP and Thrombocytopenia vs. Preeclampsia

^§BMI known for only 5 patients in HELLP group.

^¥2 patients in thrombocytopenia group had 24-hour urine proteins performed: 280 and 299 mg. The remainder of the patients had negative dipsticks