Statistical analyses
pain
Descriptive statistics from survey responses were calculated for age, gender, language preference, clinic attendance, and pain experience. Aggregate data over the 1-year period from the EHR records was obtained for each clinic and combined. These counts were divided by 26 for an average 2-week estimate for comparability to the waiting room survey data collection period. Medians, 25th and 75th percentiles (Q1 and Q3, respectively), and frequencies and percentages were calculated to summarize data. Prevalence estimates and 95% confidence intervals (CIs) were calculated for the survey responses and EHR samples. Prevalence ratios comparing the survey to EHR estimates and corresponding 95% CIs were calculated.