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Mean personal airborne and sedimenting dust RUA and MUA levels, respectively, and airborne endotoxin values for each shop were allocated to each study participant from that shop. Analyses were mainly performed using statview (v 5.01; sas Institute, Solna, Sweden). Values that were not normally distributed are presented as median with 25�C75th percentiles. Chi-square test (or Fisher��s exact test) was used to test correlation between factors. Nonparametric tests were used to test exposure differences between groups. To analyze risk factors and presence of work symptoms or sensitization, for dichotomous variables, prevalence ratios (PR) with 95% confidence interval (CI) were calculated (EpiInfo, OpenEpi v 2.3; CDC, Atlanta, GA, USA). For continuous variables, Mann�CWhitney http://www.selleckchem.com/products/AZD6244.html U-test test was http://www.selleckchem.com/products/MK-1775.html used. P? http://www.selleck.cn/products/azd4547.html amphibians (12 shops). Although dogs are forbidden to sell in pet shops in Sweden, they were often present (14 shops) as staff brought their own dogs to work. The participants had worked with animals on average 9.4?years (range 1�C36?years). Their mean age was 31.4?years (range 17�C59?years), and 24% were current smokers (Table?1). Most pet shop workers had extensive lifetime animal exposure at home �C all had owned pets, 74% at least three types of animals, and 24% had at least had seven. Dogs (83%), cats (76%), horses/regular horse riding (60%), hamsters (47%), and rabbits (45%) were the most common. Current pet exposure (in the home or outside of work in the last year) was most common to cats (57%), dogs (55%), and fish (53%), although birds or reptiles were also common as pets (both 35%). Almost all reported having had exposure to animals from an early age, and mean exposure time for dogs was 16?years, cat 14?years, and horses and rabbits both 10?years. The RUA levels were generally low, only 23% were above detection limit, whereas MUA exposure was measurable in 75% of the pet shops (Fig.?1). Levels in pet shops without rodents were mainly below detection limit. Airborne Fel d 1 was found in all pet shops. Endotoxin levels (n?=?40) were not significantly different between pet shops with rodents and shops with only other animals and were very low in supply shops (Fig.?1).
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