Table 4.

Variables associated with total knee replacement (TKR). FU = follow-up; CI = confidence interval

Variable	3 months FU		6 months FU		12 months FU
	TKR Odd Ratio	CI, 95%	TKR Odd Ratio	CI, 95%	TKR Odd Ratio	CI, 95%
Age	1.0ns	0.9-1.1	1.0ns	0.9-1.0	1.0ns	0.9-1.0
Female sex	1.3ns	0.6-2.7	1.2ns	0.6-2.5	1.3ns	0.6-2.8
Kellgren & Lawrence classification
0	1		1		1
1	8.1*	1.0-65.4	8.3*	1.0-68.7	11.2*	1.2-102.9
2	17.2**	2.2-134.8	15.3*	1.9-122.1	20.7**	2.3-186.7
3+	14.5*	1.8-113.9	13.6*	1.6-109.3	20.9**	2.3-190.2
Pain (Yes)	9.5***	2.8-31.8	6.2**	20.3-18.8	13.8***	4.6-41.6
Walking aids (Yes)	-	-	3.1*	1.3-7.5	8.6**	2.1-34.6
Intra-articular injection	-	-
None			1		1
Hyaluronic acid			1.4ns	0.6-3.3	0.6ns	0.2-1.5
Corticosteroids			1.4ns	0.5-3.6	0.9ns	0.3-3.1
Model adjust(ps.R2)	0.169***		0.206***		0.275***

^*p<0.05;

^**p<0.01;

^***p<0.001;ns: Not significant