Table 1.

Detailed descriptive data of the participants and their dogs.

Owner Data	Total number	%
Man/Woman	612/2573	19.2/80.8
Age range in years	18–98
BMI, mean (SD)	24.4 (5.1)
Number of family members living with pet	3 (1–10)
Educational level of person responding to questionnaire
o Primary	96	3.0
o Secondary/High School	669	21.0
o Vocational training	413	13.0
o University degree	1,583	49.7
o Postgraduate qualifications	356	11.2
o Other:	69	2.1
Employment*
o Student	712	22.4
o Employed	2,029	63.7
o Retired	196	6.2
o Unemployed	196	6.2
o Other:	46	1.4
Monthly family income
o <=national minimum wage (MW)	454	14.3
o 1–2 MW	741	23.3
o 2–3 MW	761	23.9
o 3–4 MW	681	21.4
o =>4 MW	548	17.2
During the past 30 days (1 month) on how many days did you smoke?
o Every day or almost every day	652	20.5
o Some days	159	5.0
o Non- smoker	2,374	74.5
Disease, Yes/No	879/2,306	27.6/72.4
Treatment, Yes/No	674/2,511	21.2/78.8
Dog Data	Total number	%
Sex, Female/Male	1,577/1,608	49.5/50.5
Age range in years	0.1–22.0
BCS, mean (SD)	3.1 (0.6)
BFI, mean (SD)	27.7 (9.5)
Breed (5 most repeated)	Mixed breed (n = 414), Labrador Retriever (n = 251), Golden Retriever (n = 107), German Shepherd (n = 92), Border Collie (n = 62)	Mixed breed (13.0%), Labrador Retriever (7.9%), Golden Retriever (3.4%), German Shepherd (2.9%), Border Collie (1.9%)
Reproductive status:
o Intact	1866	58.6
o Neutered at < 6 months	130	4.1
o Neutered at 6–11 months	266	8.4
o Neutered at 1 year	95	3.0
o Neutered at 1–2 years	254	8.0
o Neutered at 2–8 years	441	13.8
o Neutered at > 8 years	109	3.4
Not sure	24	0.8
Disease, Yes/No	617/2,568	19.4/80.6
Treatment, Yes/No	510/2,675	16.0/84.0
Visits to vet during last year, because of health problems	0–50