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Table 3 Cox regression analysis results.

From: Anopheles mortality is both age- and Plasmodium-density dependent: implications for malaria transmission

Variable Coefficient Standard Error Hazard Ratio (95% C.I.) P-value
Ookinete density per μl of blood fed as a categorical variable
Control (0) 0 - 1 -
50 0.754 0.112 2.125 (1.707, 2.645) <0.001*
100 -0.074 0.086 0.928 (0.784, 1.099 0.390
250 0.767 0.110 2.153 (1.737, 2.669) <0.001*
400 0.314 0.067 1.369 (1.200, 1.561) <0.001*
1000 0.887 0.106 2.429 (1.974, 2.988) <0.001*
2000 0.639 0.071 1.894 (1.649, 2.176) <0.001*
Experiment 1 0 - 1 -
Experiment 2 -0.411 0.053 0.663 (0.598, 0.735) <0.001*
Experiment 3 -1.000 0.105 0.368 (0.299, 0.452) <0.001*
Ookinete density per μl of blood fed as a continuous variable
Control (0) 0 - 1 -
Ookinete density 3.26 × 10-4 2.88 × 10-5 1.00032 (1.0003, 1.0004) <0.001*
Experiment 1 0 - 1 -
Experiment 2 -0.421 0.052 0.656 (0.593, 0.727) <0.001*
Experiment 3 -0.474 0.046 0.622 (0.569, 0.680) <0.001*
  1. * Significant at 5% level