Table 1.

Classification of the variables of interest for subsequent analysis.

Variable	Variable Description	Variable Classification
Victim’s Background
Gender	Biological sex of the bitten person.	Man Woman
Age group	Age group of the victim, measured in years.	Group 1 (0–4 years) Group 2 (>4–9 years) Group 3 (>9–14 years) Group 4 (>14–25 years) Group 5 (>25–40 years) Group 6 (>40–64 years) Group 7 (>64 years)
Information about the Biting Animal
Relationship of the victim to the biting animal	“Ownership” refers to the legal owner of the animal.	The dog belonged to the victim The dog did not belong to the victim Not reported
The biting animal lives in the victim’s home	“lives with the victim” refers to any dog that coexists with the victim in the same household, even if they go free roaming during the day.	Yes No
Species	Species of the animal involved in the bite incident	Canine Feline Other
Size	Subjective statement of the affected person in relation to the size or height of the biting animal	Small Medium Large
Breed	The breeds declared in the registers of biting animals were considered, discounting animals of mixed breeds, as it is a mixture of breeds. The classification of “Other” corresponds to the animals that the victims could not recognise as being of a certain breed.	Mixed-breed German Shepperd Poodle Fox Terrier Dachshund American Pit Bull Terrier Other Labrador Retriever Boxer Akita Cocker Spaniel Rottweiler Beagle Golden Retriever Yorkshire Terrier Chinese Shar-Pei Saint Bernard Bulldog Maltese Chow Chow Galgo Chihuahua Bull Terrier Pug Poodle Toy Belgian Shepperd English Shepperd French Bulldog Great Dane Fox Terrier Toy Shih Tzu Siberian Husky Collie Neapolitan Mastiff Samoyed Weimaraner Border Collie Argentine Dogo Miniature Schnauzer Basset Hound Pekingese Miniature Yorkshire Terrier West Highland White Terrier (West Highland) Bracco Italiano Dalmatian Australian Shepperd Pointer Bernese Mountain dog Cane Corso French Mastiff English Cocker Spaniel (Cocker spaniel) Galgo Italiano Labradoodle Pocket Beagle Puggle Affenpinscher Alaskan Malamute Black Russian Terrier Border Terrier Boston Terrier Bullmastiff Cardigan Welsh Corgi Coton de Tulear Doberman Pinscher (Doberman) Great Pyrenees Japanese Chin Lhasa Apso Mastiff Belgian Malinois Anatolian Shepperd Schipperke Standard Schnauzer Giant Schnauzer Australian Terrier
Classification of breeds according to “dangerousness”	The breeds included as Potentially Dangerous Dogs (P.D.D) have been considered, following those incorporated in the Law 21.020 of Responsible Tenure of Chile [29] and the Law 50/1999 of Potentially Dangerous Dogs of Spain [30]. The remaining breeds are Not Potentially Dangerous Dog (N.P.D.D), the variable “Others” the animals in which the breed was not identified and Mixed Breed, those that do not belong to pure breeds.	Potentially Dangerous Dogs (P.D.D) Non-Potentially Dangerous Dogs (N.P.D.D) Mixed-breed Other
Ownership status	Classification of the biting animal according to whether or not it had a known address (This does not mean that it has an owner)	Does not have a residence Has a residence
Information about the Context of the Attack
Seasonality of the attack Factors that influence the location of the bite.	Time of year the bite incident occurs Site where the bite incident occurs	Spring Summer Autumn Winter Inside compound or home On public road or spaces Other
Information on the Characteristics of the Injury
Type of bite.	Number of bites per victim	Single Multiple