Skip to main content

Table 2 Results of linear regression for the interrupted time series analysis of the quality of service 20 s. The analysis showed a significant increase in the slope after the implementation of the two-level filtering system, after adjustment in the number of incoming calls, the average number of connected call takers and average call duration

From: Impact of two-level filtering on emergency medical communication center triage during the COVID-19 pandemic: an uncontrolled before-after study

variable

estimate

95% CI

p-value

Intercept period 1

82.08

29.18 to 193.33

0.16

Intercept difference

−0.06

−0.17 to 193.33

0.34

Slope period 1

−0.01

−0.01 to 193.33

0.17

Slope difference

0.02

0.01 to 0.030

0.01

Incoming calls (per 100)

−0.03

−0.03 to − 0.02

<  0.001

Average connected call takers

0.09

0.07 to −0.02

<  0.001

Average call duration (per 10s)

−0.04

−0.07 to − 0.02

0.004