Statistics
PD, SD
REGRESSION
Descriptive statistics are presented as mean ± SD or as median and interquartile range for non-normally distributed variables.The difference in scores between baseline and follow up were used to classify patients as having a worse or unchanged/improved outcome in US and SPARCC BME scores. For US, a worsening was defined as an increase of one unit in B-mode or PD scores. A worsening was defined by SPARCC BME scores if scores had positive values of the minimal important change criterion or higher. The proportions with an increased US and SPARCC BME scores were calculated in percent with 95% confidence intervals (CI) for each group. Further, logistic regression analysis was performed to calculate the odds ratios (ORs) with 95% CIs for worsening in the US and SPARCC BME scores. To evaluate the actual difference in scores, the mean change between baseline and follow up was calculated for all scores in each group. Further, linear regression was performed to evaluate whether there was a difference in mean change between the groups.All statistical analyzes were conducted using StataMP 16 (16.1 Copyright 1985–2019 StataCorp LLC, StataCorp, 4905 Lakeway Drive, College Station, Texas 77,845 USA).