Table 5

Sensitivity analysis

Baseline24 Month follow upWOMAC painWOMAC function
Total (n)Drop out (n)Observed (n)Expected (n)Observed ESExpected ESObserved ESExpected ES
The column “drop out” contains all drop outs until month 24. The expected numbers of patients at the 24 month follow up reflect the numbers of patients that would be observed, if the drop out rates were equal in the different strata. The expected ES reflect the ES that would be observed, if the drop out rates were equal in the different strata. The comparisons between the expected and the observed ES are in bold. No difference between the observed and the expected ES was significant.
OA joint
Hip945044580.18−0.14
Knee1143084700.310.08
Total20880128128 0.26 0.25 0.00 −0.02
WOMAC pain baseline
Lower 30% (good health)63204339−0.46
Upper 70% (poor health)1456085890.75
Total20880128128 0.26 0.38
WOMAC function baseline
Lower 50% (good health)104317364−0.59
Upper 50% (poor health)1044955640.69
Total20880128128 −0.01 0.05