The Development of a New Understanding of Symptom Cluster During Pregnancy Using the Mediation Model

Table 3: Inter-Correlation matrix of pregnancy symptoms.

Symptom	BFI	ISI	ZDS
BFI	1	0.68**	0.48**
ISI	-	1	0.59**
ZDS	-	-	1

BFI: Brief Fatigue Inventory, ISI: Insomnia Severity Index, ZDS: Zung Depression Scale.
**p<0.01