diff --git a/src/main/java/simpaths/data/filters/FemaleWithChildrenByAgeBandFilter.java b/src/main/java/simpaths/data/filters/FemaleWithChildrenByAgeBandFilter.java
deleted file mode 100644
index 938cb6461..000000000
--- a/src/main/java/simpaths/data/filters/FemaleWithChildrenByAgeBandFilter.java
+++ /dev/null
@@ -1,31 +0,0 @@
-//package simpaths.data.filters;
-//
-//import org.apache.commons.collections.Predicate;
-//
-//import simpaths.model.Person;
-//import simpaths.model.enums.Gender;
-//import simpaths.model.enums.Indicator;
-//
-//public class FemaleWithChildrenByAgeBandFilter implements Predicate {
-//	
-//	private int ageFrom;
-//	private int ageTo;
-//	
-//	public FemaleWithChildrenByAgeBandFilter(int ageFrom, int ageTo) {
-//		super();
-//		this.ageFrom = ageFrom;
-//		this.ageTo = ageTo;
-//	}
-//
-//	@Override
-//	public boolean evaluate(Object object) {
-//		Person agent = (Person) object;
-//
-//		return ( (agent.getGender().equals(Gender.Female)) &&
-//				( agent.getHousehold().getD_children_3under().equals(Indicator.True) || agent.getHousehold().getD_children_4_12().equals(Indicator.True) ) &&
-//				( agent.getAge() >= ageFrom ) &&		//Inclusive
-//				( agent.getAge() < ageTo )				//Exclusive
-//				);
-//	}
-//
-//}
diff --git a/src/main/java/simpaths/data/filters/FemalesWithChildrenByChildAgeCSfilter.java b/src/main/java/simpaths/data/filters/FemalesWithChildrenByChildAgeCSfilter.java
index 43675b540..46f05b628 100644
--- a/src/main/java/simpaths/data/filters/FemalesWithChildrenByChildAgeCSfilter.java
+++ b/src/main/java/simpaths/data/filters/FemalesWithChildrenByChildAgeCSfilter.java
@@ -1,72 +1,22 @@
 package simpaths.data.filters;
 
 import simpaths.model.Person;
-import simpaths.model.enums.Gender;
 import microsim.statistics.ICollectionFilter;
 
-import java.util.Arrays;
-import java.util.Set;
+import java.util.function.Predicate;
 
-public class FemalesWithChildrenByChildAgeCSfilter implements ICollectionFilter{
+/// Filter women aged 20 to 65, with at least one child in the given age range.
+public class FemalesWithChildrenByChildAgeCSfilter implements ICollectionFilter {
 
-	private int ageFrom;
-	private int ageTo;
+    private Predicate<Person> checks;
 
-	public FemalesWithChildrenByChildAgeCSfilter(int ageFrom, int ageTo) {
-		super();
-		this.ageFrom = ageFrom;
-		this.ageTo = ageTo;
-	}
+    public FemalesWithChildrenByChildAgeCSfilter(int ageFrom, int ageTo) {
+        this.checks = Filters.female()
+                .and(Filters.ageRange(20, 65))
+                .and(Filters.hasChildInAgeRange(ageFrom, ageTo));
+    }
 
-
-
-	public boolean isFiltered(Object object) {
-		Person person = (Person) object;
-
-//		int minAge = 99;
-//		int maxAge = -1;
-
-		Set<Person> childrenInBU = person.getBenefitUnit().getChildren();
-		int[] ages = new int[childrenInBU.size()];
-		if (childrenInBU != null) {
-			int arrayPosition = 0;
-			for (Person child : childrenInBU) {
-				ages[arrayPosition] = child.getDemAge();
-			}
-		}
-
-		int minAge = -1;
-		int maxAge = 99;
-
-		if (ages.length > 0) {
-			minAge = Arrays.stream(ages).min().getAsInt();
-			maxAge = Arrays.stream(ages).max().getAsInt();
-		}
-
-
-/*
-		Set<Person> childrenInBU = person.getBenefitUnit().getChildren();
-		if (childrenInBU != null) {
-			for (Person child : childrenInBU) {
-				int age = child.getDemAge();
-				if (age < minAge) {
-					minAge = age;
-				}
-				if (age > maxAge) {
-					maxAge = age;
-				}
-			}
-		} else {
-			minAge = -1;
-			maxAge = 99;
-		}
-*/
-
-		return ( person.getDemMaleFlag().equals(Gender.Female) &&
-				person.getDemAge() >= 20 && person.getDemAge() <= 65 &&
-				(minAge >= ageFrom && maxAge <= ageTo)
-		);
-	}
-	
+    public boolean isFiltered(Object object) {
+        return this.checks.test((Person) object);
+    }
 }
-
diff --git a/src/main/java/simpaths/data/filters/Filters.java b/src/main/java/simpaths/data/filters/Filters.java
new file mode 100644
index 000000000..48db986e4
--- /dev/null
+++ b/src/main/java/simpaths/data/filters/Filters.java
@@ -0,0 +1,39 @@
+package simpaths.data.filters;
+
+import java.util.function.Predicate;
+
+import simpaths.model.Person;
+import simpaths.model.enums.Gender;
+import simpaths.model.enums.Indicator;
+
+/// Collection of [Person] filters.
+public class Filters {
+    private Filters() {
+    }
+
+    /// Filter the requested gender.
+    public static Predicate<Person> gender(Gender gender) {
+        return p -> p.getDemMaleFlag() == gender;
+    }
+
+    /// Filter male persons.
+    public static Predicate<Person> male() {
+        return gender(Gender.Male);
+    }
+
+    /// Filter female persons.
+    public static Predicate<Person> female() {
+        return gender(Gender.Female);
+    }
+
+    /// Filter given age range (both ends are included).
+    public static Predicate<Person> ageRange(int from, int to) {
+        return p -> p.getDemAge() >= from && p.getDemAge() <= to;
+    }
+
+    /// Filter persons with at least one child in the given age range (both
+    /// ends included).
+    public static Predicate<Person> hasChildInAgeRange(int from, int to) {
+        return p -> p.getBenefitUnit().getIndicatorChildren(from, to) == Indicator.True;
+    }
+}
diff --git a/src/main/java/simpaths/model/BenefitUnit.java b/src/main/java/simpaths/model/BenefitUnit.java
index 99feab649..4a6817bfd 100644
--- a/src/main/java/simpaths/model/BenefitUnit.java
+++ b/src/main/java/simpaths/model/BenefitUnit.java
@@ -6,6 +6,7 @@
 
 import microsim.data.db.PanelEntityKey;
 import org.hibernate.annotations.Fetch;
+import simpaths.data.filters.Filters;
 import simpaths.data.ManagerRegressions;
 import simpaths.data.MultiValEvent;
 import simpaths.model.annotations.Lag;
@@ -4130,16 +4131,13 @@ public int getNumberChildren(int minAge, int maxAge) {
         }
         return nChildren;
     }
+
+    /// Whether the Person has children in the given age range (both ends included).
     public Indicator getIndicatorChildren(int minAge, int maxAge) {
-        Indicator flag = Indicator.False;
-        for (int aa=minAge; aa<=maxAge; aa++) {
-            if (getNumberChildrenByAge(aa) > 0) {
-                flag = Indicator.True;
-                break;
-            }
-        }
-        return flag;
+        var found = this.members.stream().anyMatch(Filters.ageRange(minAge, maxAge));
+        return found ? Indicator.True : Indicator.False;
     }
+
     public Indicator getIndicatorChildren0to3() {
 
         return getIndicatorChildren(0,3);