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Table 1 ARIMA models assessing the impact of lockdowns on the use of SDMs and on MCNSP presentations

From: Time-series analysis of presentations to four syringe dispensing machines and a needle and syringe programme during COVID-19 lockdowns in Melbourne, Australia

 

Estimate

p value

95% CI

SDM model estimatesa

Lockdown step

3.85

0.29

− 3.22, 10.92

Lockdown trend

− 0.12

0.03

− 0.23, − 0.01

MCNSP model estimatesb

Lockdown step

− 32.1

0.71

− 200.0, 135.8

  1. SDM model adjusted for month of year and day of week, MCNSP model for month of year
  2. aN = 1217, ARIMA(2,1,2), Portmanteau Q test for residuals: p = 0.475
  3. bN = 39, ARIMA(1,1,0), Portmanteau Q test for residuals: p = 0.408