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Table 7 The probability of chloroquine therapeutic failiure as a function of transmission level and spraying history: Model if term removed

From: Association of house spraying with suppressed levels of drug resistance in Zimbabwe

Variable   Model Log Likelihood Change in -2 Log Likelihood df Sig. of the Change
Step 1 Transmission level -331.110 23.239 1 .000
  Last annual spraying -326.469 13.956 1 .000
  Study year -326.142 13.303 4 .010