Short and mid-term outcomes and functional results in metal-on-metal hip resurfacing arthroplasty at 5 years follow-up: the Spanish experience

Table 4 Harris Hip Score pre-surgery and post-surgery

Harris Hip Score	Mean	SD	CI 95%	Median	Min	Max	n	Missing data	p-value
Pre-surgery	41.11	9.83	39.50–42.72	42	18	60	145	0
1-month post-surgery	78.66	8.21	77.31–80.02	80	50	95	143	2	< 0.001
3-months post-surgery	88.99	6.33	87.94–90.03	90	60	100	143	2	< 0.001
6-months post-surgery	88.99	6.33	87.94–90.03	90	60	100	143	2	< 0.001
1-year post-surgery	96.77	3.68	96.16–97.38	98	80	100	142	3	< 0.001
2-years post-surgery	97.18	3.37	96.61–97.74	99	80	100	137	8	< 0.001
3-years post-surgery	97.55	2.42	97.15–97.96	98	90	100	137	8	< 0.001
4-years post-surgery	97.28	3.05	96.76–97.80	98	80	100	134	11	< 0.001
5-years post-surgery	97.63	2.58	97.19–98.07	99	90	100	134	11	< 0.001

The p-value corresponds to a comparison between the Harris Hip Scores pre-surgery and post-surgery using the Wilcoxon Test
SD standard deviation, CI confidence interval

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