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Table 1 Relative frequencies for self-reported improvement or worsening in the 24 WOMAC questionnaire items three months after versus one week before TKA

From: Clinical benefit and cost effectiveness of total knee arthroplasty in the older patient

  improvement worsening
pain   
when walking on flat ground 78% 3%
when walking up/down stairs 82% 3%
which discontinuous night sleep 57% 8%
in sitting or lying 68% 10%
in straight standing 87% 1%
stiffness   
after first morning wake up 64% 13%
after over-day rest 78% 6%
difficulties   
when stepping down stairs 76% 5%
when stepping up stairs 78% 6%
in standing up when sitting 79% 3%
in straight standing 89% 3%
when picking things from floor 76% 8%
when walking on flat ground 78% 2%
when entering a car or bus 76% 8%
when going shopping 76% 7%
when putting on socks.etc. 74% 6%
when putting off socks etc. 84% 5%
in getting out of bed 76% 8%
when lying in bed 68% 3%
when entering or leaving a bath tub 62% 0%
in sitting for a longer time 68% 7%
when sitting on the toilet 76% 8%
in doing less easy homework 72% 3%
in doing easy homework 76% 5%