Module: BMI::CommonRisk

Included in:
JASSO, WHO
Defined in:
lib/bmi/commonrisk.rb

Constant Summary collapse

UPPER_LIMIT = 
25
LOWER_LIMIT = 
18.5.to_r

Instance Method Summary collapse

Instance Method Details

#normal? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bmi/commonrisk.rb', line 26

def normal?
  (LOWER_LIMIT...UPPER_LIMIT).cover?(@index)
end

#obese? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bmi/commonrisk.rb', line 18

def obese?
  @index >= 30
end

#overweight? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bmi/commonrisk.rb', line 22

def overweight?
  @index >= UPPER_LIMIT
end

#prime ⇒ Fixnum

Returns:

  • (Fixnum) 


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# File 'lib/bmi/commonrisk.rb', line 35

def prime
  100 - ((@index / UPPER_LIMIT) * 100)
end

#risk ⇒ Symbol

Returns:

  • (Symbol) 


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# File 'lib/bmi/commonrisk.rb', line 9

def risk
  _risks.find { |symbol| __send__(:"#{symbol}?") } ||
    raise('must not happen')
end

#underweight? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bmi/commonrisk.rb', line 30

def underweight?
  @index < LOWER_LIMIT
end

#very_obese? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bmi/commonrisk.rb', line 14

def very_obese?
  @index >= 35
end