Table 1

Demographic data for 203 children presenting to an urban trauma centre with dog bite injuries, and for 203 dogs reported to have bitten

Variable		Mean (SD) or (%)
Children (n=203)
Gender	Male	55.2
Gender	Female	44.8
Age	Mean; median	7.2 years; 6.5 years
	0–2 years	20.7
	3–6 years	31.0
	7–12 years	35.5
	12–17 years	12.8
Hospital admission	Yes	16.7
Injury severity score (ISS)
ISS-1		85.4
ISS-2		9.1
ISS-3		2.5
ISS-4+		3.0
Anatomical site of bite injury^*
Face/head		52.5
Arm/hand		32.3
Leg/foot		20.6
Other		7.0
Dogs
Size	Small	23.9
	Medium	38.8
	Large	25.4
	Very large	11.9
Breed^**	Mixed breed	28.0
	Pit bull type	22.0^† ^§
	Rottweiler^‡	6.0^†
	Labrador retriever^‡	5.0^†
	Akita	4.0^†
	Cocker spaniel	4.0^†
	German shepherd^‡	3.0^†
	Shih Tzu	3.0^†
	Boxer^‡	2.0^†
	Bulldog^‡	2.0^†
	Yorkshire terrier^‡	2.0^†
Sex	Male	73.3
	Female	26.7
Neutered	Yes	43.0
	No	57.0
Age	Mean; median	3.8 years; 3 years

Neutered status was not available for 92 subjects (44.9%); dog sex was not available for 28 subjects (12.2%). Other variables had no more than 10% missing data.
* Children may have been bitten in more than one anatomical site.
† Percentage of purebred dogs.
‡ Listed in the top 10 registered AKC breeds in Philadelphia (2008).10
§ Not currently recognised by the AKC.
** Breeds represented with frequency ≥ n=4.