Sentence examples for deviations were available from from inspiring English sources
Comparison of the VISA-A-G group scores with the originial VISA-A [ 8] was performed using a two sample t-test since only means and standard deviations were available from the original report.
Where not directly available, standard deviations required in the meta-analysis were converted from standard errors; if a measure of variability was not given and standard deviations were available for at least 50% of included studies, the mean of the standard deviations of the remaining studies was used.
Where no standard deviations were available, they were calculated from standard errors, confidence intervals or t values [ 25], or attempts were made to obtain the missing data from the trial authors by email.
For comparison of the VISA-A-S with the VISA-A, a two sample t-test was used since only means and standard deviations, and no raw data, were available from the results in the original study [ 17].
The rationale and the assumed distribution (mean and standard deviation) of each of the variables are available from earlier work (CARTaGENE, 2008; Gaye, 2012).
"It's available from today.
