Table 2

 Changes during the 6 weeks of the study in the three main symptomatic outcome variables by treatment group

Outcome variableChanges at week 1Changes at week 6
Paracetamol (n=405)Placebo (n=374)p ValuesParacetamol (n=405)Placebo (n=374)p Values
Results are shown as mean (SD).
Pain VAS (0–100 mm)16 (21)15 (21)0.39823 (27)23 (26)0.660
WOMAC function subscale (0–100)8 (12)7 (12)0.49912 (17)12 (16)0.580
Patient’s global assessment (0–100 mm)14 (21)12 (22)0.06322 (26)20 (27)0.229