Impact of gender and race on expectations and outcomes in total knee arthroplasty

Table 2 Summary statistics of pre-operative assessments and expectations

		n		Mean	Median	Mode	SD	Minimum	Maximum
		Valid	Missing
Number of friends		133	0	7.47	5	10	7.7	0	50
Pre-Op Psychometric Scales	Emotional/ Informational support score	133	0	85.34	96.9	100	20.9	3	100
	Tangible support score	133	0	82.02	94	100	24.2	0	100
	Affectionate support score	133	0	88.84	100	100	19.3	0	100
	Overall medical outcomes support index	133	0	85.28	90.8	100	18.7	1	100
	Geriatric depression scale1	133	0	3.39	3	2	3	0	13
	Positive social support	133	0	86.28	100	100	22.5	0	100
Pre-Op Pain Catastrophizing Scale	Rumination2	133	0	7.28	7	16	5.1	0	16
	Magnification3	133	0	2.63	2	0	3.2	0	12
	Helpnessness3	133	0	6.29	4	0a	6.1	0	24
	Total3	126	7	16.2	13	6a	12.9	0	52
Expectations	Pre-op	69	64	81.98	89.5	97	17.7	23	100
	Post-op (4-8 wk)4			70.97	86.8	100	29.8	3	100

¹Using General Linear Modeling (GLM) Multivariate Analysis (MANOVA), differences between groups was observed for Race and Age Group, P < 0.05;

²Using GLM and MANOVA, differences between groups was observed within Age Group, P < 0.05;

³Using GLM and MANOVA, differences between groups were observed for Age Group (P < 0.05), Race (P << 0.01), and Relationship Status (P << 0.01);

⁴Using GLM and MANOVA, differences between groups was observed for Gender (P <0.05).

^aMultiple modes exist. The smallest value is shown.