Table 2 Percentage of koalas (N of koalas) of the four most common diagnoses by sex (stratified by age class; N = 509 koalas with age and sex information) for koalas submitted to South-East Queensland hospitals and receiving necropsies at The University of Queensland from 2013 through to 2016. Koalas may be counted more than once in the diagnoses categories due to co-morbidities.

From: A Necropsy Study of Disease and Comorbidity Trends in Morbidity and Mortality in the Koala (Phascolarctos cinereus) in South-East Queensland, Australia

Age groupInfectiousTraumaNeoplasiaWasting unknown
FemaleMaleFemaleMaleFemaleMaleFemaleMale
Young/Subadult (N = 154)67.2% (45/67)*35.6% (31/87)*46.3% (31/67)55.2% (48/87)4.5% (3/67)5.8% (5/87)1.5% (1/67)*60.7% (17/87)*
Mature (N = 234)76.4% (81/106)*61.7% (79/128)*32.1% (34/106)32.8% (42/128)9.4% (10/106)9.4% (12/128)1.9% (2/106)*39.3% (11/128)*
Old (N = 118)80.8% (59/73)*60.0% (27/45)*17.8% (13/73)*37.8% (17/45)*8.2% (6/73)6.7% (3/45)  
  1. *Statistical differences between sex groups at p < 0.05.
  2. Percentage of koalas per sex group within each age class for each diagnosis was calculated as N of koalas per sex and age group for each diagnoses/Total number of koalas per sex and age group.