“…Results from some of the outcomes could not be pooled because they were assessed using different measures (for example; Hill (1997) used the Leeds Satisfaction Questionnaire to measure satisfaction but used a different questionnaire). In some studies, different measures were used to assess different aspects of the same outcome and it would not be appropriate to combine the results of, for example, disease activity measured by plasma viscosity (Hill et al, 1994, Hill et al, 2003 with those measured by DAS28 (Hill et al, 2003, Ryan et al, 2006, Tijhuis et al, 2002. The outcomes that could not be combined were summarised in a tabular form with corresponding sizes of effect, 95% confidence intervals and P-values where applicable.…”