State-adjusted intervention cost, gain, and duration across digital proficiency tiers
| Proficiency tier | Intervention | Baseline cost (ZAR) | Baseline gain (1–100) | Baseline duration (weeks) | State-adjusted criterion values | ||
|---|---|---|---|---|---|---|---|
| Strong engagement (cost/gain/duration) | Moderate engagement (cost/gain/duration) | Weak engagement (cost/gain/duration) | |||||
| High | In-house mentorship | 73,000 | 80 | 2 | 51,100/56/2.0 | 14,600/16/2.6 | 7,300/8/3.4 |
| Online tutorial | 36,500 | 60 | 3 | 18,250/30/3.0 | 10,950/18/4.5 | 7,300/12/6.0 | |
| Self-paced study | 14,600 | 40 | 4 | 5,110/14/4.0 | 5,840/16/6.8 | 3,650/10/10.0 | |
| Medium | In-house mentorship | 220,000 | 80 | 4 | 132,000/48/4.0 | 66,000/24/5.6 | 22,000/8/7.2 |
| Online tutorial | 110,000 | 60 | 6 | 49,500/27/6.0 | 38,500/21/9.6 | 22,000/12/13.2 | |
| Self-paced study | 8,800 | 40 | 8 | 2,200/10/8.0 | 3,960/18/14.4 | 2,640/12/22.4 | |
| Low | In-house mentorship | 30,000 | 80 | 4 | 15,000/40/4.0 | 10,500/28/6.0 | 4,500/12/8.0 |
| Online tutorial | 20,000 | 60 | 6 | 8,000/24/6.0 | 8,000/24/10.2 | 4,000/12/15.0 | |
| Self-paced study | 2,000 | 40 | 10 | 400/8/10.0 | 1,000/20/20.0 | 600/12/30.0 | |
| Proficiency tier | Intervention | Baseline cost (ZAR) | Baseline gain (1–100) | Baseline duration (weeks) | State-adjusted criterion values | ||
|---|---|---|---|---|---|---|---|
| Strong engagement (cost/gain/duration) | Moderate engagement (cost/gain/duration) | Weak engagement (cost/gain/duration) | |||||
| High | In-house mentorship | 73,000 | 80 | 2 | 51,100/56/2.0 | 14,600/16/2.6 | 7,300/8/3.4 |
| Online tutorial | 36,500 | 60 | 3 | 18,250/30/3.0 | 10,950/18/4.5 | 7,300/12/6.0 | |
| Self-paced study | 14,600 | 40 | 4 | 5,110/14/4.0 | 5,840/16/6.8 | 3,650/10/10.0 | |
| Medium | In-house mentorship | 220,000 | 80 | 4 | 132,000/48/4.0 | 66,000/24/5.6 | 22,000/8/7.2 |
| Online tutorial | 110,000 | 60 | 6 | 49,500/27/6.0 | 38,500/21/9.6 | 22,000/12/13.2 | |
| Self-paced study | 8,800 | 40 | 8 | 2,200/10/8.0 | 3,960/18/14.4 | 2,640/12/22.4 | |
| Low | In-house mentorship | 30,000 | 80 | 4 | 15,000/40/4.0 | 10,500/28/6.0 | 4,500/12/8.0 |
| Online tutorial | 20,000 | 60 | 6 | 8,000/24/6.0 | 8,000/24/10.2 | 4,000/12/15.0 | |
| Self-paced study | 2,000 | 40 | 10 | 400/8/10.0 | 1,000/20/20.0 | 600/12/30.0 | |
Note(s): ZAR: South African Rand
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