Table 1.

Characteristics of responders and nonresponders to screening questionnaire at 10 and 12 weeks post‐TKR^*

	Responders	Nonresponders
Screening questionnaire 10 weeks post‐TKR
Total, no. (%)	3,058 (61)	1,977 (39)
Age, years	69.7 ± 8.8	69.9 ± 9.8
Female sex, %	54.5	62.2
Total OKS (0–48; worst to best)	29.3 ± 9.6	–
OKS pain component (0–100; worst to best)	62.3 ± 21.2	–
OKS function component (0–100; worst to best)	59.4 ± 20.8	–
Telephone‐administered screening questionnaire at 12 weeks post‐TKR†
Total, no. (%)	553 (61)	354 (39)
Age, years	67.7 ± 8.6	69.4 ± 10.4
Female sex, %	56.2	62.0
Total OKS 10 weeks post‐TKR	18.2 ± 5.4	17.2 ± 5.7
OKS pain component 10 weeks post‐TKR	36.6 ± 11.3	35.6 ± 12.2
OKS function component 10 weeks post‐TKR	40.0 ± 14.4	36.2 ± 15.0

^*Values are the mean ± SD unless indicated otherwise. OKS = Oxford Knee Score; TKR = total knee replacement.

^†Eligible at 10 weeks (n = 907).