. 2020 Nov 18;12(4):456–463. doi: 10.4055/cios19148

Table 4. Correlation between Age, OHI, SF-12, PCS, MCS, KOOS, and Eysenck Scores.

Variable	OHI	Preoperative				Postoperative				Difference
Variable	OHI	SF-12	PCS	MCS	KOOS	SF-12	PCS	MCS	KOOS	SF-12	PCS	MCS	KOOS
Age	−0.162^*	−0.109	−0.018	−0.173	0.039	−0.096	−0.035	−0.125	−0.144	−0.026	−0.075	0.022	−0.165
Age	0.251^†	0.441	0.901	0.220	0.784	0.500	0.808	0.376	0.309	0.857	0.598	0.879	0.242
OHI	1	0.527^‡	0.372^‡	0.504^‡	−0.076	0.643^‡	0.504^‡	0.672^‡	0.705^‡	0.470^‡	0.242	0.521^‡	0.739^‡
OHI	1	0.000	0.007	0.000	0.590	0.000	0.000	0.000	0.000	0.000	0.084	0.000	0.000
Eysenck extroversion	0.064	0.221	0.099	0.253	−0.060	0.241	0.191	0.251	0.073	0.143	0.148	0.098	0.109
Eysenck extroversion	0.654	0.116	0.486	0.071	0.671	0.085	0.175	0.072	0.607	0.311	0.294	0.487	0.443
Eysenck neuroticism	−0.104	−0.052	−0.021	−0.061	−0.024	−0.101	−0.060	−0.117	−0.020	−0.118	−0.061	−0.131	−0.005
Eysenck neuroticism	0.461	0.714	0.882	0.667	0.863	0.478	0.671	0.409	0.889	0.405	0.670	0.355	0.975

OHI: Oxford Happiness Inventory, SF-12: 12-item short form health survey, PCS: physical component summary, MCS: mental component summary, KOOS: Knee Injury and Osteoarthritis Outcome Score.

^*Pearson correlation. ^†Statistically significant (2-tailed). ^‡Significant correlation at the 0.01 level (2-tailed).