Summary statistics
| N | mean | sd | p25 | median | p75 | |
|---|---|---|---|---|---|---|
| HHI | 553,132 | 0.132 | 0.201 | 0.0219 | 0.0538 | 0.136 |
| HHI*10k | 553,132 | 1319.215 | 2011.002 | 219 | 538 | 1,364 |
| log(HHI*10k) | 553,132 | 6.355 | 1.293 | 5.39 | 6.29 | 7.22 |
| No. skills per ad | 553,132 | 6.557 | 7.266 | 2 | 4 | 9 |
| Education index [1,8] | 553,132 | 4.461 | 1.164 | 4 | 4 | 5 |
| Primary | 553,132 | 0.021 | 0.145 | 0 | 0 | 0 |
| Lower secondary | 553,132 | 0.000 | 0.014 | 0 | 0 | 0 |
| Post-secondary | 553,132 | 0.037 | 0.189 | 0 | 0 | 0 |
| Short-cycle tertiary | 553,132 | 0.691 | 0.462 | 0 | 1 | 1 |
| Upper secondary | 553,132 | 0.005 | 0.068 | 0 | 0 | 0 |
| Bachelor or equivalent | 553,132 | 0.188 | 0.391 | 0 | 0 | 0 |
| Master or equivalent | 553,132 | 0.050 | 0.217 | 0 | 0 | 0 |
| Doctoral or equivalent | 553,132 | 0.008 | 0.091 | 0 | 0 | 0 |
| Experience index [1,8] | 375,182 | 3.662 | 1.769 | 3 | 4 | 4 |
| No experience | 375,182 | 0.153 | 0.360 | 0 | 0 | 0 |
| <= 1 year | 375,182 | 0.043 | 0.204 | 0 | 0 | 0 |
| (1–2] years | 375,182 | 0.246 | 0.431 | 0 | 0 | 0 |
| (2–4] years | 375,182 | 0.371 | 0.483 | 0 | 0 | 1 |
| (4–6] years | 375,182 | 0.078 | 0.267 | 0 | 0 | 0 |
| (6–8] years | 375,182 | 0.013 | 0.115 | 0 | 0 | 0 |
| (8–10] years | 375,182 | 0.029 | 0.167 | 0 | 0 | 0 |
| >10 years | 375,182 | 0.066 | 0.248 | 0 | 0 | 0 |
| N | mean | sd | p25 | median | p75 | |
|---|---|---|---|---|---|---|
| HHI | 553,132 | 0.132 | 0.201 | 0.0219 | 0.0538 | 0.136 |
| HHI*10k | 553,132 | 1319.215 | 2011.002 | 219 | 538 | 1,364 |
| log(HHI*10k) | 553,132 | 6.355 | 1.293 | 5.39 | 6.29 | 7.22 |
| No. skills per ad | 553,132 | 6.557 | 7.266 | 2 | 4 | 9 |
| 553,132 | 4.461 | 1.164 | 4 | 4 | 5 | |
| Primary | 553,132 | 0.021 | 0.145 | 0 | 0 | 0 |
| Lower secondary | 553,132 | 0.000 | 0.014 | 0 | 0 | 0 |
| Post-secondary | 553,132 | 0.037 | 0.189 | 0 | 0 | 0 |
| Short-cycle tertiary | 553,132 | 0.691 | 0.462 | 0 | 1 | 1 |
| Upper secondary | 553,132 | 0.005 | 0.068 | 0 | 0 | 0 |
| Bachelor or equivalent | 553,132 | 0.188 | 0.391 | 0 | 0 | 0 |
| Master or equivalent | 553,132 | 0.050 | 0.217 | 0 | 0 | 0 |
| Doctoral or equivalent | 553,132 | 0.008 | 0.091 | 0 | 0 | 0 |
| 375,182 | 3.662 | 1.769 | 3 | 4 | 4 | |
| No experience | 375,182 | 0.153 | 0.360 | 0 | 0 | 0 |
| <= 1 year | 375,182 | 0.043 | 0.204 | 0 | 0 | 0 |
| (1–2] years | 375,182 | 0.246 | 0.431 | 0 | 0 | 0 |
| (2–4] years | 375,182 | 0.371 | 0.483 | 0 | 0 | 1 |
| (4–6] years | 375,182 | 0.078 | 0.267 | 0 | 0 | 0 |
| (6–8] years | 375,182 | 0.013 | 0.115 | 0 | 0 | 0 |
| (8–10] years | 375,182 | 0.029 | 0.167 | 0 | 0 | 0 |
| >10 years | 375,182 | 0.066 | 0.248 | 0 | 0 | 0 |
Source(s): Authors' calculations on AIDA and Wollybi data of 2015–2018