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Table 1 Results of segmented regression analysis of human brucellosis by expanded surveillance of bovine brucellosis in beef cattle and adding diagnostic methods for the case definition of human brucellosis

From: The impact of expanded brucellosis surveillance in beef cattle on human brucellosis in Korea: an interrupted time-series analysis

Parameter Valuea 95% Confidence Interval p-value
Pre-intervention phase
 Pre-intervention slope (secular trend, per month) 0.14 0.10 to 0.18 <  0.01
Intervention 1
 Change in level (immediate effect) 0.76 0.20 to 1.32 0.18
 Change in slope (gradual effect per month) −0.17 − 0.25 to − 0.09 0.03
Intervention 2
 Change in level 1.94 1.40 to 2.53 <  0.01
 Change in slope −0.19 − 0.28 to − 0.10 0.04
Intervention 3
 Change in level −1.02 −1.51 to −0.53 0.04
 Change in slope 0.20 0.14 to 0.26 <  0.01
  1. aIncidence: per 10 million people