diff --git a/app/models/budget/stats.rb b/app/models/budget/stats.rb
index acbd93139..cbcde4703 100644
--- a/app/models/budget/stats.rb
+++ b/app/models/budget/stats.rb
@@ -2,7 +2,7 @@ class Budget::Stats
   include Statisticable
   alias_method :budget, :resource
 
-  def stats_methods
+  def self.stats_methods
     %i[total_participants total_participants_support_phase total_participants_vote_phase
       total_budget_investments total_votes total_selected_investments
       total_unfeasible_investments total_male_participants total_female_participants
@@ -13,121 +13,111 @@ class Budget::Stats
   private
 
     def total_participants
-      stats_cache("total_participants") { participants.distinct.count }
+      participants.distinct.count
     end
 
     def total_participants_support_phase
-      stats_cache("total_participants_support_phase") { voters.uniq.count }
+      voters.uniq.count
     end
 
     def total_participants_web
-      stats_cache("total_participants_web") do
-        (balloters - poll_ballot_voters).uniq.compact.count
-      end
+      (balloters - poll_ballot_voters).uniq.compact.count
     end
 
     def total_participants_booths
-      stats_cache("total_participants_booths") { poll_ballot_voters.uniq.count }
+      poll_ballot_voters.uniq.count
     end
 
     def total_participants_vote_phase
-      stats_cache("total_participants_vote_phase") { balloters.uniq.count }
+      balloters.uniq.count
     end
 
     def total_budget_investments
-      stats_cache("total_budget_investments") { budget.investments.count }
+      budget.investments.count
     end
 
     def total_votes
-      stats_cache("total_votes") { budget.ballots.pluck(:ballot_lines_count).inject(0) { |sum, x| sum + x } }
+      budget.ballots.pluck(:ballot_lines_count).inject(0) { |sum, x| sum + x }
     end
 
     def total_selected_investments
-      stats_cache("total_selected_investments") { budget.investments.selected.count }
+      budget.investments.selected.count
     end
 
     def total_unfeasible_investments
-      stats_cache("total_unfeasible_investments") { budget.investments.unfeasible.count }
+      budget.investments.unfeasible.count
     end
 
     def total_male_participants
-      stats_cache("total_male_participants") { participants.where(gender: "male").count }
+      participants.where(gender: "male").count
     end
 
     def total_female_participants
-      stats_cache("total_female_participants") { participants.where(gender: "female").count }
+      participants.where(gender: "female").count
     end
 
     def total_supports
-      stats_cache("total_supports") { supports(budget).count }
+      supports(budget).count
     end
 
     def total_unknown_gender_or_age
-      stats_cache("total_unknown_gender_or_age") do
-        participants.where("gender IS NULL OR date_of_birth is NULL").uniq.count
-      end
+      participants.where("gender IS NULL OR date_of_birth is NULL").uniq.count
     end
 
     def age_groups
-      stats_cache("age_groups") do
-        groups = Hash.new(0)
-        ["16 - 19",
-         "20 - 24",
-         "25 - 29",
-         "30 - 34",
-         "35 - 39",
-         "40 - 44",
-         "45 - 49",
-         "50 - 54",
-         "55 - 59",
-         "60 - 64",
-         "65 - 69",
-         "70 - 140"].each do |group|
-          start, finish = group.split(" - ")
-          group_name = (group == "70 - 140" ? "+ 70" : group)
-          groups[group_name] = User.where(id: participants)
-                                   .where("date_of_birth > ? AND date_of_birth < ?",
-                                          finish.to_i.years.ago.beginning_of_year,
-                                          start.to_i.years.ago.end_of_year).count
-        end
-        groups
+      groups = Hash.new(0)
+      ["16 - 19",
+       "20 - 24",
+       "25 - 29",
+       "30 - 34",
+       "35 - 39",
+       "40 - 44",
+       "45 - 49",
+       "50 - 54",
+       "55 - 59",
+       "60 - 64",
+       "65 - 69",
+       "70 - 140"].each do |group|
+        start, finish = group.split(" - ")
+        group_name = (group == "70 - 140" ? "+ 70" : group)
+        groups[group_name] = User.where(id: participants)
+                                 .where("date_of_birth > ? AND date_of_birth < ?",
+                                        finish.to_i.years.ago.beginning_of_year,
+                                        start.to_i.years.ago.end_of_year).count
       end
+      groups
     end
 
     def male_percentage
-      stats_cache("male_percentage") { total_male_participants / total_participants_with_gender.to_f * 100 }
+      total_male_participants / total_participants_with_gender.to_f * 100
     end
 
     def female_percentage
-      stats_cache("female_percentage") { total_female_participants / total_participants_with_gender.to_f * 100 }
+      total_female_participants / total_participants_with_gender.to_f * 100
     end
 
     def participants
-      stats_cache("participants") do
-        User.where(id: (authors + voters + balloters + poll_ballot_voters).uniq.compact)
-      end
+      User.where(id: (authors + voters + balloters + poll_ballot_voters).uniq.compact)
     end
 
     def authors
-      stats_cache("authors") { budget.investments.pluck(:author_id) }
+      budget.investments.pluck(:author_id)
     end
 
     def voters
-      stats_cache("voters") { supports(budget).pluck(:voter_id) }
+      supports(budget).pluck(:voter_id)
     end
 
     def balloters
-      stats_cache("balloters") { budget.ballots.where("ballot_lines_count > ?", 0).pluck(:user_id) }
+      budget.ballots.where("ballot_lines_count > ?", 0).pluck(:user_id)
     end
 
     def poll_ballot_voters
-      stats_cache("poll_ballot_voters") do
-        budget&.poll ? budget.poll.voters.pluck(:user_id) : []
-      end
+      budget&.poll ? budget.poll.voters.pluck(:user_id) : []
     end
 
     def total_participants_with_gender
-      stats_cache("total_participants_with_gender") { participants.where.not(gender: nil).distinct.count }
+      participants.where.not(gender: nil).distinct.count
     end
 
     def balloters_by_heading(heading_id)
@@ -143,28 +133,26 @@ class Budget::Stats
     end
 
     def headings
-      stats_cache("headings") do
-        groups = Hash.new(0)
-        budget.headings.order("id ASC").each do |heading|
-          groups[heading.id] = Hash.new(0).merge(calculate_heading_totals(heading))
-        end
-
-        groups[:total] = Hash.new(0)
-        groups[:total][:total_investments_count] = groups.collect {|_k, v| v[:total_investments_count]}.sum
-        groups[:total][:total_participants_support_phase] = groups.collect {|_k, v| v[:total_participants_support_phase]}.sum
-        groups[:total][:total_participants_vote_phase] = groups.collect {|_k, v| v[:total_participants_vote_phase]}.sum
-        groups[:total][:total_participants_all_phase] = groups.collect {|_k, v| v[:total_participants_all_phase]}.sum
-
-        budget.headings.each do |heading|
-          groups[heading.id].merge!(calculate_heading_stats_with_totals(groups[heading.id], groups[:total], heading.population))
-        end
-
-        groups[:total][:percentage_participants_support_phase] = groups.collect {|_k, v| v[:percentage_participants_support_phase]}.sum
-        groups[:total][:percentage_participants_vote_phase] = groups.collect {|_k, v| v[:percentage_participants_vote_phase]}.sum
-        groups[:total][:percentage_participants_all_phase] = groups.collect {|_k, v| v[:percentage_participants_all_phase]}.sum
-
-        groups
+      groups = Hash.new(0)
+      budget.headings.order("id ASC").each do |heading|
+        groups[heading.id] = Hash.new(0).merge(calculate_heading_totals(heading))
       end
+
+      groups[:total] = Hash.new(0)
+      groups[:total][:total_investments_count] = groups.collect {|_k, v| v[:total_investments_count]}.sum
+      groups[:total][:total_participants_support_phase] = groups.collect {|_k, v| v[:total_participants_support_phase]}.sum
+      groups[:total][:total_participants_vote_phase] = groups.collect {|_k, v| v[:total_participants_vote_phase]}.sum
+      groups[:total][:total_participants_all_phase] = groups.collect {|_k, v| v[:total_participants_all_phase]}.sum
+
+      budget.headings.each do |heading|
+        groups[heading.id].merge!(calculate_heading_stats_with_totals(groups[heading.id], groups[:total], heading.population))
+      end
+
+      groups[:total][:percentage_participants_support_phase] = groups.collect {|_k, v| v[:percentage_participants_support_phase]}.sum
+      groups[:total][:percentage_participants_vote_phase] = groups.collect {|_k, v| v[:percentage_participants_vote_phase]}.sum
+      groups[:total][:percentage_participants_all_phase] = groups.collect {|_k, v| v[:percentage_participants_all_phase]}.sum
+
+      groups
     end
 
     def calculate_heading_totals(heading)
@@ -209,6 +197,10 @@ class Budget::Stats
       ActsAsVotable::Vote.where(votable_type: "Budget::Investment", votable_id: supportable.investments.pluck(:id))
     end
 
+    stats_cache(*stats_methods)
+    stats_cache :total_participants_with_gender
+    stats_cache :voters, :participants, :authors, :balloters, :poll_ballot_voters
+
     def stats_cache(key, &block)
       Rails.cache.fetch("budgets_stats/#{budget.id}/#{key}/v10", &block)
     end
diff --git a/app/models/concerns/statisticable.rb b/app/models/concerns/statisticable.rb
index 2751b7447..0a8032e3d 100644
--- a/app/models/concerns/statisticable.rb
+++ b/app/models/concerns/statisticable.rb
@@ -9,7 +9,19 @@ module Statisticable
     end
 
     def generate
-      stats_methods.map { |stat_name| [stat_name, send(stat_name)] }.to_h
+      self.class.stats_methods.map { |stat_name| [stat_name, send(stat_name)] }.to_h
+    end
+  end
+
+  class_methods do
+    def stats_cache(*method_names)
+      method_names.each do |method_name|
+        alias_method :"raw_#{method_name}", method_name
+
+        define_method method_name do
+          stats_cache(method_name) { send(:"raw_#{method_name}") }
+        end
+      end
     end
   end
 end
diff --git a/app/models/poll/stats.rb b/app/models/poll/stats.rb
index e855097ea..2b40f2daf 100644
--- a/app/models/poll/stats.rb
+++ b/app/models/poll/stats.rb
@@ -3,7 +3,7 @@ class Poll::Stats
   include StatsHelper
   alias_method :poll, :resource
 
-  def stats_methods
+  def self.stats_methods
     %i[total_participants total_participants_web total_web_valid total_web_white total_web_null
        total_participants_booth total_booth_valid total_booth_white total_booth_null
        total_valid_votes total_white_votes total_null_votes valid_percentage_web valid_percentage_booth
@@ -15,105 +15,108 @@ class Poll::Stats
   private
 
     def total_participants
-      stats_cache("total_participants") { total_participants_web + total_participants_booth }
+      total_participants_web + total_participants_booth
     end
 
     def total_participants_web
-      stats_cache("total_participants_web") { total_web_valid + total_web_white + total_web_null }
+      total_web_valid + total_web_white + total_web_null
     end
 
     def total_participants_web_percentage
-      stats_cache("total_participants_web_percentage") { calculate_percentage(total_participants_web, total_participants) }
+      calculate_percentage(total_participants_web, total_participants)
     end
 
     def total_participants_booth
-      stats_cache("total_participants_booth") { total_booth_valid + total_booth_white + total_booth_null }
+      total_booth_valid + total_booth_white + total_booth_null
     end
 
     def total_participants_booth_percentage
-      stats_cache("total_participants_booth_percentage") { calculate_percentage(total_participants_booth, total_participants) }
+      calculate_percentage(total_participants_booth, total_participants)
     end
 
     def total_web_valid
-      stats_cache("total_web_valid") { voters.where(origin: "web").count - total_web_white }
+      voters.where(origin: "web").count - total_web_white
     end
 
     def valid_percentage_web
-      stats_cache("valid_percentage_web") { calculate_percentage(total_web_valid, total_valid_votes) }
+      calculate_percentage(total_web_valid, total_valid_votes)
     end
 
     def total_web_white
-      stats_cache("total_web_white") { 0 }
+      0
     end
 
     def white_percentage_web
-      stats_cache("white_percentage_web") { calculate_percentage(total_web_white, total_white_votes) }
+      calculate_percentage(total_web_white, total_white_votes)
     end
 
     def total_web_null
-      stats_cache("total_web_null") { 0 }
+      0
     end
 
     def null_percentage_web
-      stats_cache("null_percentage_web") { calculate_percentage(total_web_null, total_null_votes) }
+      calculate_percentage(total_web_null, total_null_votes)
     end
 
     def total_booth_valid
-      stats_cache("total_booth_valid") { recounts.sum(:total_amount) }
+      recounts.sum(:total_amount)
     end
 
     def valid_percentage_booth
-      stats_cache("valid_percentage_booth") { calculate_percentage(total_booth_valid, total_valid_votes) }
+      calculate_percentage(total_booth_valid, total_valid_votes)
     end
 
     def total_booth_white
-      stats_cache("total_booth_white") { recounts.sum(:white_amount) }
+      recounts.sum(:white_amount)
     end
 
     def white_percentage_booth
-      stats_cache("white_percentage_booth") { calculate_percentage(total_booth_white, total_white_votes) }
+      calculate_percentage(total_booth_white, total_white_votes)
     end
 
     def total_booth_null
-      stats_cache("total_booth_null") { recounts.sum(:null_amount) }
+      recounts.sum(:null_amount)
     end
 
     def null_percentage_booth
-      stats_cache("null_percentage_booth") { calculate_percentage(total_booth_null, total_null_votes) }
+      calculate_percentage(total_booth_null, total_null_votes)
     end
 
     def total_valid_votes
-      stats_cache("total_valid_votes") { total_web_valid + total_booth_valid }
+      total_web_valid + total_booth_valid
     end
 
     def total_valid_percentage
-      stats_cache("total_valid_percentage"){ calculate_percentage(total_valid_votes, total_participants) }
+      calculate_percentage(total_valid_votes, total_participants)
     end
 
     def total_white_votes
-      stats_cache("total_white_votes") { total_web_white + total_booth_white }
+      total_web_white + total_booth_white
     end
 
     def total_white_percentage
-      stats_cache("total_white_percentage") { calculate_percentage(total_white_votes, total_participants) }
+      calculate_percentage(total_white_votes, total_participants)
     end
 
     def total_null_votes
-      stats_cache("total_null_votes") { total_web_null + total_booth_null }
+      total_web_null + total_booth_null
     end
 
     def total_null_percentage
-      stats_cache("total_null_percentage") { calculate_percentage(total_null_votes, total_participants) }
+      calculate_percentage(total_null_votes, total_participants)
     end
 
     def voters
-      stats_cache("voters") { poll.voters }
+      poll.voters
     end
 
     def recounts
-      stats_cache("recounts") { poll.recounts }
+      poll.recounts
     end
 
+    stats_cache(*stats_methods)
+    stats_cache :voters, :recounts
+
     def stats_cache(key, &block)
       Rails.cache.fetch("polls_stats/#{poll.id}/#{key}/v12", &block)
     end