Validation of an 18-item version of the Swedish Knee Self-Efficacy Scale for patients after ACL injury and ACL reconstruction

Journal of Experimental Orthopaedics

Table 2 Patient demographics of cohort 2

Follow-ups	n	Age	Female (%)	BMI	Tegner Pre-injury activity level
10 weeks after ACL injury	228	32.2 ± 13.2 (12.3;63)	59	24 ± 3 (15;38)	7 (1;10) (4)
4 months after ACL injury	206	33.8 ± 13.1 (8.7;65.7)	59	24 ± 3 (15;39)	7 (1;10) (4)
8 months after ACL injury	167	36.0 ± 12.6 (9.1;66.0)	59	24 ± 3 (16;37)	6 (1;10) (4)
12 months after ACL injury	133	37.7 ± 12.3 (9.4;66.3)	61	25 ± 4 (15;37)	6 (1;10) (4)
18 months after ACL injury	88	38.2 ± 11.8 (9.9;66.8)	58	25 ± 4 (16;39)	6 (1;10) (3)
Preoperative^a	388	27.9 ± 10.3 (13.4;60.9)	64	24 ± 3 (17;39)	8 (1;10) (3)
10 weeks after ACL reconstruction	913	27.5 ± 10.1 (11.5;64.0)	57	24 ± 3 (15;39)	8 (1;10) (3)
4 months after ACL reconstruction	929	27.7 ± 10.0 (11.6;64.1)	56	24 ± 3 (15;39)	8 (1;10) (3)
8 months after ACL reconstruction	877	28.5 ± 10.5 (12.6;64.5)	55	24 ± 3 (18;39)	8 (1;10) (3)
12 months after ACL reconstruction	715	28.7 ± 10.5 (13.0;64.8)	56	24 ± 3 (17;43)	8 (1;10) (3)
18 months after ACL reconstruction	438	30.3 ± 11.1 (13.5;65.3)	55	24 ± 3 (18;36)	8 (1;10) (3)

ACL injury refers to patients treated with rehabilitation, ACL reconstruction refers to patients treated with reconstruction and rehabilitation, Age and Body Mass Index (BMI) is presented as mean ± standard deviation (min;max), Tegner Pre-injury activity level is presented as median (min;max) and (interquartile range)
^aFollow-up performed within 6 weeks prior to ACL reconstruction