PROM	Pre-Pandemic Mean ± SD	*p-value	Pandemic Mean ± SD	†p-value	**p-value	††p-value
VAS back
Preoperative	6.1±2.6	-	5.8±2.5	-	0.484	0.782
6-weeks	4.2±2.8	<0.001	3.2±2.5	0.007	0.152	0.266
12-weeks	3.1±2.5	<0.001	3.6±2.9	0.004	0.470	0.627
6-months	3.1±2.5	<0.001	2.5±2.2	<0.001	0.484	0.544
1-year	3.0±2.9	<0.001	2.8±2.9	0.109	0.802	0.945
VAS leg
Preoperative	5.4±2.9	-	5.3±3.0	-	0.828	0.386
6-weeks	3.4±2.7	<0.001	2.6±2.6	0.022	0.223	0.474
12-weeks	2.2±2.5	<0.001	2.5±2.7	0.167	0.680	0.586
6-months	2.8±2.9	<0.001	2.4±2.7	0.066	0.731	0.789
1-year	2.5±2.8	<0.001	2.1±2.4	0.087	0.709	0.922
ODI
Preoperative	37.6±14.8	-	40.0±20.1	-	0.436	0.700
6-weeks	33.7±18.1	0.158	33.6±17.1	0.470	0.980	0.846
12-weeks	22.6±15.5	<0.001	27.4±13.7	0.052	0.229	0.406
6-months	22.5±18.6	<0.001	22.1±17.2	0.003	0.933	0.068
1-year	20.7±22.0	<0.001	20.7±15.9	0.236	0.999	0.948
PHQ-9
Preoperative	5.7±5.7	-	3.9±5.1	-	0.095	0.019
6-weeks	4.4±4.8	0.025	3.8±4.2	0.743	0.635	0.116
12-weeks	3.3±4.7	<0.001	2.4±4.2	0.239	0.460	0.263
6-months	3.1±4.7	<0.001	2.7±4.2	0.037	0.793	0.496
1-year	3.9±4.7	0.024	2.4±4.1	0.631	0.413	0.242
PROMIS-PF
Preoperative	38.4±23.5	-	38.4±23.5	-	0.553	0.790
6-weeks	38.4±23.5	0.070	35.9±23.2	0.517	0.173	0.304
12-weeks	41.6±7.5	<0.001	41.1±7.8	0.007	0.824	0.792
6-months	44.3±8.4	<0.001	45.0±9.3	0.009	0.761	0.625
1-year	45.2±9.5	<0.001	44.4 ±6.7	0.078	0.818	0.509