Table 2

Probability of antibiotic resistance (95% CI)

TrimethoprimCefalexinNitrofurantoinAugmentin
20020.352 (0.251 to 0.468)0.042 (0.014 to 0.117)0.155 (0.089 to 0.257)0.000 (0.000 to 0.051)
20030.36 (0.261 to 0.473)0.093 (0.046 to 0.180)0.067 (0.029 to 0.147)0.16 (0.094 to 0.259)*
20040.443 (0.332 to 0.559)0.086 (0.040 to 0.175)0.143 (0.079 to 0.243)0.271 (0.181 to 0.385)
20050.319 (0.234 to 0.419)0.053 (0.023 to 0.119)0.149 (0.091 to 0.235)0.340 (0.253 to 0.441)
20060.652 (0.531 to 0.755)0.076 (0.033 to 0.165)0.227 (0.143 to 0.342)0.455 (0.340 to 0.574)
20070.485 (0.368 to 0.603)0.227 (0.143 to 0.342)*0.121 (0.063 to 0.221)0.682 (0.562 to 0.782)
20080.548 (0.425 to 0.665)*0.177 (0.102 to 0.290)*0.113 (0.056 to 0.215)0.774 (0.656 to 0.860)
  • 95% CIs calculated according to Newcombe RG formula.6

  • * p<0.05.

  • p<0.001 calculated by Yates' corrected χ2 test.