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Table 2 Factors affecting temporal trends in HFRS incidence for Shuangyang County, and for the combined other nine counties, Changchun

From: Increasing incidence of hemorrhagic fever with renal syndrome could be associated with livestock husbandry in Changchun, Northeastern China

County Variable (unit) Univariate analysis Multivariate analysis
  PC (95% CI) P-value PC (95% CI) P-value
Shuangyang Livestock husbandry     
    Large animals (10 h/km2) 45.0 (42.2, 47.8) < 0.001 - -
    Sheep density (10 h/km2) 1154.0 (978.0, 1358.8) < 0.001 - -
    Deer density (10 h/km2) 70.7 (65.8, 75.7) < 0.001 70.7 (65.8, 75.7) < 0.001
  Climate factors     
    Temperature (1°C) 61.9 (49.9, 74.8) < 0.001 - -
    Precipitation (1 mm) -35.2 (-37.8, -32.4) < 0.001   
    Relative humidity (%) -3.2 (-3.8, -2.5) < 0.001 - -
Other nine counties Livestock husbandry     
    Large animals (10 h/km2) 26.8 (24.9, 28.8) < 0.001 - -
    Sheep density (10 h/km2) 68.6 (63.0, 74.5) < 0.001 - -
    Deer density (1 h/km2) 76.4 (69.0, 84.1) < 0.001 90.4 (81.6, 99.6) < 0.001
  Climate factors     
    Temperature (1°C) 4.8 (0.02, 9.7) 0. 049 - -
    Precipitation (1 mm) -1.1 (-1.6, -0.7) < 0.001 - -
    Relative humidity (%) -6.1 (-7.6, -4.5) < 0.001 7.1 (5.1, 9.0) < 0.001
  1. Time-series Poisson regression analysis results.