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Table 3 RTI episodes in two groups during follow-up visit

From: Exploring association between gastrointestinal heat retention syndrome and recurrent respiratory tract infections in children: a prospective cohort study

Follow-up visit period Disease diagnosis   Group with GHRS Group without GHRS Z value P value
3 months URTI 232 179 −2.478 0.013*
  LRTI Bronchitis 16 9 −0.471 0.638
  Pneumonia 2 2
  RTI 250 190 −2.551 0.011*
6 months URTI 449 329 −3.542 0.000**
  LRTI Bronchitis 29 19 −0.553 0.581
  Pneumonia 6 7
  RTI 484 355 −3.582 0.000**
9 months URTI 606 441 −3.990 0.000**
  LRTI Bronchitis 32 28 −0.319 0.750
  Pneumonia 8 8
  RTI 646 477 −3.710 0.000**
12 months URTI 723 519 −3.915 0.000**
  LRTI Bronchitis 35 34 −0.240 0.811
  Pneumonia 9 9
  RTI 767 562 −3.553 0.000**
  1. *P < 0.05 shows there is significant difference between two groups
  2. **P < 0.01 shows there is highly significant difference between two groups
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