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Table 2 Results from interrupted time series regression assessing the odds of testing positive for malaria in Lusaka District from 2009 to 2012. Standard errors have been adjusted for correlated data at the clinic level

From: Enhanced surveillance and data feedback loop associated with improved malaria data in Lusaka, Zambia

  Factor Odds ratio (95 % confidence interval) p-value
Monthly trend 2009–2010 0.976 (0.949–1.004) 0.092
2011–2012 1.042 (1.005–1.080) 0.026
Season Dry Reference  
Wet 2.861 (2.297–3.564) <0.001
Enhanced Vegetation Index 1st tertile Reference  
2nd tertile 1.157 (0.779–1.717) 0.454
3rd tertile 0.943 (0.560–1.589) 0.820
  1. N = 26 facilities and 548,158 suspected cases tested