Table 4.

Blood routine and CRP between in the confirmed and in the control groups.

	Confirmed group		Control group		①-③		②-④		①-②		③-④
	Prenatal ①	Postpartum ②	Prenatal ③	Postpartum ④	t/Z	p	t/Z	p	t/Z	p	t/Z	p
WBC (*109,$\overline{\mathrm{X}}$ ± s)	8.9 ± 1.5	12.6 ± 3.6	10.0 ± 2.9	13.3 ± 4.2	−1.294	0.201	−0.606	0.547	−4.595	0.001	−5.252	0.000
Neutrophil% (%,$\overline{\mathrm{X}}$ ± s)	77.1 ± 5.8	85.1 ± 7.2	77.5 ± 8.1	84.4 ± 5.5	−0.128	0.898	0.368	0.715	−3.678	0.003	−4.444	0.001
Neutrophil (*109,$\overline{\mathrm{X}}$ ± s)	6.9 ± 1.4	10.9 ± 3.9	7.8 ± 3.0	11.4 ± 4.1	−1.071	0.289	−0.380	0.705	−4.405	0.001	−5.313	0.000
Lymphocyte (*109,$\overline{\mathrm{X}}$ ± s)	1.4 ± 0.4	1.1 ± 0.4	1.6 ± 0.5	1.3 ± 0.5	−0.711	0.480	−1.388	0.171	2.364	0.036	1.690	0.117
Lymphocyte% (%,$\overline{\mathrm{X}}$ ± s)	16.4 ± 5.1.	9.8 ± 5.6	16.9 ± 7.4	10.7 ± 4.5	−0.216	0.830	−0.545	0.588	3.395	0.005	4.372	0.001
CRP [mg/L, (median,95%CI)]	3.7,1.9–7.8	19.6,8.3–49.1	2.9,1.4–3.8	52.7,21.5–108.7	−0.357	0.721	−1.109	0.267	−2.830	0.005	−5.620	0.000

Student's test and Kolmogorov-Smirnov Z were used.