Table 2.

The individual and fetal profiles of pregnant volunteers.

Pregnant volunteers	A	B	C	D
Age	27	26	27	28
Education level	Undergraduate	Undergraduate	Undergraduate	Undergraduate
Height/m	1.56	1.52	1.59	1.66
Weight/kg	61.8	63.4	62.5	65.3
Body mass index (BMI)	25.39	27.44	24.72	23.70
Health level	Wellness	Wellness	Wellness	Wellness
Number of fetuses	1	1	1	1
Gestational age	32 week + 4	32 week + 5	32 week + 4	32 week + 6
Amniotic fluid index (AFI)/mm	136	153	145	121