Table 3 Descriptive statistics of the input, output and environmental variables
Variables | 2011 | 2012 | ||
|---|---|---|---|---|
Med | IQR | Med | IQR | |
Input | ||||
Operating Room | 1.0 | 1.0 | 1.0 | 1.0 |
Elective operating hours | 80.0 | 97.0 | 80.0 | 81.0 |
Permanent ophthalmologist | 3.0 | 4.0 | 4.0 | 4.0 |
Supporting clinical staff | 4.0 | 1.0 | 4.0 | 2.0 |
Assistant Medical Officers | 4.0 | 4.8 | 5.0 | 6.0 |
Nurses | 8.0 | 7.5 | 8.5 | 10.0 |
Operative microscope | 2.0 | 1.0 | 2.0 | 2.0 |
Phacoemulsifier | 2.0 | 1.0 | 2.0 | 1.3 |
Vitrectomy device | 1.0 | 1.0 | 1.0 | 2.0 |
Output | ||||
Total surgeriesa | 723.1 | 864.9 | 805.4 | 928.7 |
Cataract surgery | 725.5 | 683.0 | 848.0 | 835.5* |
Quality-adjusted cataract surgeryb | 679.6 | 648.9 | 774.4 | 773.7* |
Non-cataract surgery | 43.5 | 216.0 | 31.0 | 155.0 |
Glaucoma surgery | 13.5 | 29.8 | 10.5 | 27.8 |
Vitreo-retinal surgery | 0.0 | 75.5 | 0.0 | 76.0 |
Corneal surgery | 0.0 | 0.0 | 0.0 | 0.0 |
Oculoplasty surgery | 0.0 | 0.0 | 0.0 | 1.0 |
Outpatient visits | 19722.0 | 15254.0 | 21319.0 | 14658.0 |
Inpatient admissions | 955.0 | 1263.0 | 908.0 | 969.0 |
Environmental factors | ||||
Proportion of centre with day surgery service (%) | 81 % | - | 89 % | - |
Hospital type (by proportion (%)) | - | |||
Major Specialist Hospital | 52.8 % | - | 52.8 % | - |
Minor Specialist Hospital | 8.3 % | - | 8.3 % | - |
State Hospital | 38.9 % | - | 38.9 % | - |
Mean | SD | Mean | SD | |
Proportion of population above 60 years old (within the centre's district)(%)c | - | - | 7.3 % | 3.1 % |
Total population of the district ('000)c | - | - | 511.3 | 397.6 |