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Table 5 Results of multivariate analysis of non-HAART, HAART and total costs ppm on HAART

From: Resource utilisation and cost of ambulatory HIV care in a regional HIV centre in Ireland: a micro-costing study

  Non HAART cost ppm on HAART Coefficient1 HAART cost ppm Coefficient2 Total cost ppm on HAART Coefficient2
New patient −6.555* −0.03 −0.004
Female 1.464 0.138* 0.139*
Age 50+ years −3.113* −0.101* −0.117*
Risk factor    
COHP    
MSM 1.308 0.033 0.037
Heterosexual 0.32 0.054 0.054
Other/unknown −0.737 0.05 0.054
Late diagnosis    
No ref ref ref
Unknown −0.354 −0.012 −0.015
Yes −0.515 −0.035 −0.04
Years since diagnosis    
11+ years ago ref ref ref
6-10 years ago −0.267 0.053 0.05
1-5 years ago 1.825 0.041 0.059
diagnosed in 2012 4.504 0.078 0.128
Min CD4 < 350 cells/μl 3.432* 0.02 0.054
On HAART, not suppressed/other 2.051 0.059 0.089*
Constant 31.314 3.896 4.026
  1. 1) Generalised linear model with Inverse Gaussian family and link power 0.5. 2) Generalised linear model, with Gaussian family and link power 0.2. * p < 0.05. PPM, per patient month. COHP, person from a country of high prevalence with no other identifiable risk factor available. IDU, current/former injecting drug user. Late diagnosis defined as CD4 count < 350 cells/μl at diagnosis or AIDS defining illness at diagnosis. “On HAART” means the patient was on HAART for the entire duration of the study, “suppressed” was defined as all viral loads in 2012 < 50 copies/ml, with one test result of 50–499 copies/ml allowed if previous and subsequent viral load results were < 50 copies/ml. “On HAART, other” includes patients on HAART who were not suppressed or had undetermined status and those who started/stopped HAART in 2012.