Obtain a 98% confidence interval estimating the difference (actual minus sham) in mean shoulder condition score one year after such interventions in the population of patients with persistent shoulder pain. When expressed in the format (lower bound, upper bound), give the numerical values rounded to 1 decimal place (for ex. 1.1, no text).

Enter the margin of error for this confidence interval as a numerical value rounded to one decimal places (for ex. 1.1, no letters or text):