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Table 5 Infection control and content and use of patient records measures

From: The impact of hospital accreditation on quality measures: an interrupted time series analysis

Infection Control, Surveillance and Reporting Measures Intercept Time(β 1 ) Intervention (β 2 ) (Change in level) Tim_Aft_Int (β 3 ) (Change in Slope) R2 Autocorrelation (AC) Check (Durbin Watson) Test for Seasonality/Stationarity (Dickey Fuller Unit Root Test)
Value P-value Value P-value Coefficient 95%Confidence Interval (LCI, UCI) P-value Coefficient 95%Confidence Interval (LCI, UCI) P-value D-Value (before) D-Value (after) P-value Result
Y 18 6.90 0.00* -0.71 0.00* 1.41(0.09, 2.72) 0.04* 0.70(0.31, 1.100 0.001* 0.30 1.63 No AC 0.00 No Seasonality
Y 19 0.65 0.22 -0.05 0.48 0.25(-0.81, 1.32) 0.63 0.08(-0.08, 0.23) 0.33 0.12 1.61 No AC 0.00 No Seasonality
Y 20 0.08 0.50 0.00 1.00 -0.05(-0.29, 0.18) 0.64 0.00(-0.03, 0.04) 0.81 0.51 2.31 No AC 0.00 No Seasonality
Availability, Content and Use of Patient Records
Y 17 57.33 0.000* 1.95 0.0058* 4.33(-4.98, 13.64) 0.35 -1.85(-3.22, -0.480 0.01* 0.54 1.75 No AC 0.01 No Seasonality
Mortality Rate
Y 21 -0.04 0.59 0.02 0.15 -0.01(-0.16, 0.140 0.90 -0.02(-0.04, 0.01) 0.15 0.10 2 No AC 0.00 No Seasonality
  1. AC refers to Autocorrelation, D-Value is the Durbin Watson statistic, *P ≤ 0.05 is considered significant.