Influence of mental and psychological states on surgical outcomes following open reduction and internal fixation for trimalleolar ankle fractures

Table 7 Comparison of evaluation indicators at the last follow-up between the two patient groups, median (interquartile range)

Variables	Pain	Function	Alignment
Group A (n = 231)	40.00 (30.00, 40.00)	47.00 (44.00, 48.00)	10.00 (10.00, 20.00)
Group B (n = 236)	40.00 (40.00, 40.00)	48.00 (47.00, 50.00)	10.00 (10.00, 10.00)
Z	7.74	2.89	1.01
P value	< 0.01	< 0.01	0.31
Group difference (95%CI)	Med diff: 0.00 (-10.00 to 0.00)	Med diff: -1.0 (-2.0 to 0.0)	Med diff: 0 (0-10.0)
Effect size (95%CI)	r: 0.36 (0.27-0.44)	r: 0.13 (0.04-0.22)	r: 0.05 (-0.04 to 0.14)

CI: Confidence interval; Med diff: Median difference; r: Rank-biserial correlation.