TABLE III.

Serious Adverse Events and Adverse Events at 12 Months Postoperatively in Participants Who Underwent Knee Arthroplasty (N = 384)

	All* (N = 384)	Usual Care* (N = 132)	Arthritis Education* (N = 125)	Pain Coping Skills* (N = 127)
Serious adverse events†	100	28	36	36
Venous thromboembolism	8	3	2	3
Infection of index knee	4	1	1	2
Other non-knee orthopaedic surgery‡	7	5	2	0
Hospitalization (psychological distress)	2	1	1	0
Hospitalization (other)§	20	7	6	7
Urinary tract infection	1	0	1	0
Revision or other surgery of index knee	7	1	3	3
Manipulation of index knee	17	3	7	7
Contralateral knee replacement	32	7	13	12
Death	2	0	0	2
Adverse events#	20	9	3	8
Patient Health Questionnaire (PHQ-8) score >19	10	6	1	3
Verbal report of psychological distress	5	2	1	2
Shortness of breath	1	0	0	1
Twisted knee	1	1	0	0
Fractured patella	1	0	0	1
Emergency room visit for knee pain	2	0	1	1

^*The values are given as the number of participants.

^†These values were not significant at p = 0.330, determined with use of the Fisher exact test.

^‡Other orthopaedic surgical procedures were lumbar fusion (n = 1) and to treat hip fracture (n = 1), malleolar fracture (n = 1), tibial fracture (n = 1), and shoulder injury (n = 1).

^§Other hospitalization reasons included heart failure, anemia, cellulitis, angioplasty, pacemaker, and cyst removal, among others.

^#These values were not significant at p = 0.190, determined with use of the Fisher exact test.