Table 4.
Benefit Variables used in model with 'baseline', 'low' and 'high' values, and sources
| Variable | Baseline (Low, High) | Source |
| Percentage of pregnant women unscreened through existing practice | 70% (50%, 90%) | [17,18] |
| Annual population pregnant women | 1522 (1142, 1903) | [20] |
| Percentage pregnant women that accept screening – 14 wks gestation | 95% (63%, 100%) | [17,46-48] |
| Percentage pregnant women that accept screening – onset of labour | 85% (67%, 100%) | [17,49,50] |
| Percentage pregnant women that accept screening – infant at birth | 90% (67%, 100%) | [17,50] |
| Percentage pregnant women that accept ART – 14 wks gestation | 75% (50%, 95%) | [18,51] |
| Percentage pregnant women that accept ART – onset of labour | 75% (50%, 100%) | [18] |
| Percentage of pregnant women that accept ART – infant after birth | 75% (50%, 100%) | [18] |
| Prevalence of undiagnosed HIV in women of childbearing age | 4.9% (3.6%, 6.1%) | [18,52] |
| Additional percentage of screened women who hadn't seroconverted at time of first test or contracted HIV since first test | 2% (0%, 6%) | [17,25,50] |
| % of women who seek antenatal care prior by 14 weeks gestation | 63.4% (47.6%, 79.4%) | [17,20] |
| % of women who seek antenatal care after 14 weeks and present to hospital in sufficient time prior to delivery | 25.2% (19.5%, 32.5%) | [17,20] |
| Termination of pregnancy in diagnosed HIV+ mothers | 1% (0%, 5%) | [17,53] |
| TR without treatment – no breastfeeding | 28% (16%, 33%) | [2-4] |
| TR with treatment from 14 wks gestation- no breastfeeding | 2% (1%, 7.3%) | [4,5,54] |
| TR with treatment from onset of labour – no breastfeeding | 10% (5%, 15%) | [4,14,15] |
| TR with treatment within 24 hours birth – no breastfeeding | 13.1% (8.9%, 17.3%) | [15,16] |
| Life Expectancy HIV- infant | 77.74 (58, 97) | [20] |
| Time to Diagnosis of HIV+ infant without screening (months) | 5.2 (3.9. 13.0) | [55,56] |
| HIV+ infant – % FP | 25% (5%, 40%) | [22-24] |
| HIV + infant – Time in HIV phase NP (screened) (yrs) | 8.5 (5.7, 13.5) | [57] |
| HIV+ infant – Time in HIV phase NP (unscreened) (yrs) | 6.2 (4.7, 8.5) | [57] |
| HIV+ infant – Time in HIV phase FP (screened) (yrs) | 0.75 (0.25, 1.25) | [18,57] |
| HIV+ infant – Time in HIV phase FP (unscreened) (yrs) | 0.5 (0.0, 1.0) | [18,57] |
| HIV+ infant – Time in AIDS phase NP (screened) (yrs) | 4.6 (1.7, 10.3) | [18,57] |
| HIV+ infant – Time in AIDS phase NP (unscreened) (yrs) | 3.9 (1.5, 9.7) | [57] |
| HIV+ infant – Time in AIDS phase FP (screened) (yrs) | 0.75 (0.25, 1.25) | [22-24] |
| HIV+ infant – Time in AIDS phase FP (unscreened) (yrs) | 0.5 (0.0, 1.0) | [18,22-24] |
| Life expectancy HIV+ mother from diagnosis (normal diagnosis path) (years) | 12.0 (9.8, 18.2) | [58] |
| Life expectancy HIV+ mother from diagnosis (early diagnosis due to screening) (years) | 12.70 (9.9, 15.0) | [58] |
| Time to diagnosis of HIV+ mother without screening (months) | 20.4 (15.0, 25.5) | [58] |
TR = Transmission Rate
FP = Fast Progressor
NP = Normal Progressor