Table 4.

The comparison of HOMA-IR in four groups.

	Pre-BMI <24 kg/m2 (n = 98)		Pre-BMI ≥24 kg/m2 (n = 24)		T value or Z value
	Non-GDM (n = 71)	GDM (n = 27)	Non-GDM (n = 17)	GDM (n = 7)	P value
HOMA-IR (M(P25–P75))	1.30 (0.89–1.71)	1.71 (1.15–2.25)	2.09 (1.27–3.10)	2.25 (1.58–2.27)	Z0 = −3.78, P0 = 0 Z1 = −2.23, P1 = 0.026 Z2 = −0.83, P2 = 0.41 Z3 = −3.42, P3 = 0.001 Z4 = −1.66, P4 = 0.097

Z₀, P₀: the group have pre- BMI<24 compared with pre- BMI ≥24. Z value, T value, and P value are the same as those group compared in Table 2.