Country | Triggers | Frequency (%) | Study |
---|---|---|---|
-Pakistan (Asia) | -Infections | −62.9% | Moorani KN [14] |
(i)  ARI a | −54.5% | (retrospective study) | |
(ii)  Diarrhea | −22.3% |  | |
(iii)  UTI b | −8.2% |  | |
(iv)  Others | −15.0% |  | |
-Poor compliance | −10.4% |  | |
-Unknown | −26.7% |  | |
-Canada (N. America) |    -ARI (URI) | −69.0% | McDonald N et al. [15] |
  -no ARI (URI) | −31% | (prospective study) | |
-Japan (Asia) |   -ARI (URI) | −52% | Takahashi S et al. [16] |
  -School events | −18% | (retrospective study) | |
  -Others | −30% |  | |
-India (Asia) |   -URI c | −92% | -Gulati A et al. (2011) [50] |
  -Gastroenteritis | −6% | (prospective study) | |
  -Fever without localized signs | −2% |  |