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Table 3 Change in endpoints

From: Quality of life outcomes in patients undergoing knee replacement surgery: longitudinal findings from the QPro-Gin study

  Baseline Follow-up: 3 Months Change: Follow-up - Baseline P
SF 12-PCS, n, mean ± SD 132 35.6 ± 9 39.7 ± 8.7 4.2 ± 11.3 < 0.001
SF 12-MCS, n, mean ± SD, 132 48.1 ± 11.1 50 ± 10.7 2.0 ± 11.3 0.044
WOMAC–Index, n, mean ± SD 132 45.7 ± 16 22.5 ± 14.5 −23.2 ± 17.6 < 0.001
  1. Abbreviation: SD standard deviation, CI confidence intervals, SF 12 Short-Form General Health Survey, PCS physical component scores, MCS mental component scores, WOMAC Western Ontario and McMaster Universities Arthritis Index, P p-value for paired t-test
  2. SF 12 ranges from 0 to 100, with 0 indicating worst quality of life
  3. WOMAC-Index ranges from 0 to 100, with 100 indicating more limitation (pain, stiffness and physical function)