Quality of life ‐ SF12
Study	Group	Scale	Measure	Patients	Baseline	3 months	12 months	Notes
Tjandra 2008	Control	Physical health	Mean±SD	60	39.29±12.12	41.5±9.89	40.5±10.2	P > 0.05 at 3 months and 12 months compared with baseline.
Tjandra 2008		Mental health	Mean±SD	60	45.38±12.32	47.82±10.66	48.22±10.12	P > 0.05 at 3 months and 12 months compared with baseline.
Tjandra 2008	SNS	Physical health	Mean±SD	53	39.81±11.14	43.18±11.68	42.22±9.25	P > 0.025 at all time points.
Tjandra 2008		Mental health	Mean±SD	53	45.25±11.09	50.16±10.41	49.22±10.88	P > 0.025 at 12 months. However, p = 0.005 at 3 months.