Table 3.

Proportions of 100 horses at each of three clinics with unilateral sinus disease that also had changes to their ipsilateral nasal conchal bullae (NCB) including their ventral conchal bullae (VCB) and dorsal conchal bullae (DCB).

NCB involvement	RDSVS	RVC	Rossdales	Combined
VCB empyema	24%	14%	22%	20%
VCB damaged	26%	24%	17%	22.3%
DCB empyema	15%	6%	23%	14.7%
DCB damaged	17%	16%	12%	14.3%
NCB involvement	58%	54%	56%	56%
No NCB involvement	42%	46%	44%	44%
Both NCB involved	24%	6%	18%	16%

RDSVS, University of Edinburgh; RVC, University of London.