# predicateForCategorySamples(with:value:) Returns a predicate that checks a category sample’s value. ``` class func predicateForCategorySamples(with operatorType: NSComparisonPredicate.Operator, value: Int) -> NSPredicate ``` ## Parameters `operatorType` The type of operation to perform when matching the category sample’s value against the target value. For a list of possible operators, see . `value` The category sample’s target value. Use an enumeration value appropriate for the type of category samples you are working with. For example, a predicate for sleep analysis samples use values from the [`HKCategoryValueSleepAnalysis`](/documentation/HealthKit/HKCategoryValueSleepAnalysis) enumeration. ## Return Value A predicate that matches category samples based on the provided expression. This predicate works only with category samples. ## Discussion Use this convenience method to create a predicate that checks a category sample’s value. The following listing uses both the convenience method and a predicate format string to create equivalent predicates. ```objc NSPredicate *asleep = [HKQuery predicateForCategorySamplesWithOperatorType:NSEqualToPredicateOperatorType value:HKCategoryValueSleepAnalysisAsleep]; NSPredicate *explicitAsleep = [NSPredicate predicateWithFormat:@"%K == %d", HKPredicateKeyPathCategoryValue, HKCategoryValueSleepAnalysisAsleep]; ``` ## See Also [`value`](/documentation/HealthKit/HKCategorySample/value) The category value for this sample. [`HKPredicateKeyPathCategoryValue`](/documentation/HealthKit/HKPredicateKeyPathCategoryValue) The key path for accessing the category sample’s value. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)