Table 5.

Estimated relative risk of mild and severe thrombocytopenia for preterm delivery and NICU admission

	eRR	95 % CI	p value
Preterm delivery < 34 GW
Agea	1.07	0.92–1.25	0.359
Mild thrombocytopeniab	0.91	0.62–1.35	0.649
Severe thrombocytopeniab	1.61	1.06–2.45	0.026
Severe hypertension	1.30	0.93–1.82	0.121
utero-placental dysfunction	2.22	1.66–2.96	< 0.001
maternal organ damage except thrombocytopenia	1.49	1.05–2.12	0.025
NICU admission
Agea	1.09	0.99–1.20	0.071
Mild thrombocytopeniab	0.97	0.76–1.24	0.814
Severe thrombocytopeniab	1.35	1.06–1.73	0.016
Severe hypertension	1.17	0.94–1.44	0.158
utero-placental dysfunction	2.23	1.87–2.67	< 0.001
maternal organ damage except thrombocytopenia	1.50	1.22–1.84	< 0.001

^a: Estimated relative risk of 5 years increase in age

^b: Reference is normal platelet count (> 100 × 10⁹/L)

Mild thrombocytopenia, platelet count < 150 × 10⁹/L and ≥ 100 × 10⁹/L; severe thrombocytopenia, platelet count < 100 × 10⁹/L

eRR estimated relative risk; CI confidence interval; GW gestational weeks; NICU neonatal intensive care unit