Nursing interventions based on Snyder’s hope theory for depression following percutaneous coronary interventions: A clinical study

Table 2 Psychological resilience

Groups	Resilience		Optimism		Self-improvement		Total
	Before	After	Before	After	Before	After	Before	After
Control group	30.18 ± 4.56	37.42 ± 5.16a	8.12 ± 1.32	11.14 ± 1.48a	17.96 ± 3.36	22.54 ± 2.78a	56.26 ± 9.24	71.10 ± 9.42a
Observation group	30.12 ± 4.52	42.78 ± 3.44a	8.18 ± 1.36	13.16 ± 1.24a	18.12 ± 3.42	27.60 ± 2.18a	56.42 ± 9.30	83.54 ± 6.86a
t	0.081	7.485	0.274	9.060	0.289	12.404	0.106	9.245
P value	0.936	< 0.001	0.784	< 0.001	0.773	< 0.001	0.916	< 0.001

^aP < 0.05 indicates statistically significant differences when compared with the same group before care.

Scores are expressed as mean ± SD.