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. 2015 Dec;65(6):465–472.

Table 1.

Characteristics of publications that compare UD risk by sex, diet, age, or season

Reference Study typea n Blinding Definition of UD Confirmation of UD diagnosis Aim to identify UD risk factors Comparison according to
Sex Age Diet Season
1 Andrews and colleagues (1994) C 18 Not described Well described Histology Partially X X
2 Bender and colleagues (2008) B 81 Yes (behavioral assessment) Not defined Histology No X
3 Blackwell and colleagues (1995) B 266 Not described Not defined Unclear No X X
7 Dufour and colleagues (2010) A 12 Yes (experiment 1) Well described Identification by veterinarian Partially X X
12 Hampton and colleagues (2012) C 25 Not described Well described Histology Partially X X
13 Kastenmayer and colleagues (2006) E 1352 Not described Well described Histology, bacterial culture Yes X X X
15 Krugner-Higby and colleagues (2012) B 11 Not described Well described Histology, bacterial culture Partially X
19 Neuhaus and colleagues (2012) B 10 Not described Partially defined: age and gross findings Lesion character Yes X
20 Pugh and colleagues (1999) B 75 Not described Partially defined: open wounds and excessive scratching Unclear No X
21 Sell and colleagues (2000) B 31 Not described Not defined Lesion, response to treatment No X
26 Turturro and colleagues (2002) B 56 Not described Partially defined: ulceration and self-mutilation Unclear, possibly histology No X X X
31 Zhang and colleagues (2015) B 16 Not described Partially defined: ulcerated inflammatory lesions Histology Partially X
a

Study types: A, blinded, randomized, controlled trial comparing 2 interventions; B, controlled trial lacking either blinding or randomization; C, prospective cohort study; E, retrospective cohort or case-control study