Referring Season

Number of referred patients per season

Percentage of number of patients referred per season of total

Spring

32

19.6

Summer

64

39.3

Autumn

29

17.8

Winter

38

23.3

Total

163

100

Table 1: Frequency distribution of patients referring to the allergy clinic of Qods hospital in Qazvin during 2007-2010 complaining of allergic rhinitis in terms of season.
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