Table B.3.
Impact of different assumptions on the reported significance level of observed trends.
| Trend | Significance level (σ) |
||||||
|---|---|---|---|---|---|---|---|
| All | Jackknife interval |
 (H I) to 0 |
Low z |
 |
 |
 |
|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
 – Cf(H I) |
3.0 | [2.5, 3.5] | 2.5 | − | − | − | − |
 – Cf(H I) |
3.0 | [2.0, 3.5] | 3.0 | 2.5 | − | − | − |
 – Cf(H I) |
3.0 | [2.5, 3.5] | 3.5 | − | − | − | − |
| EW(Lyα) – Cf(H I) | 2.5 | [2.5, 4.0] | 1.5 | 2.0 | − | − | − |
| fesc(Lyα) – Cf(H I) | 4.0 | [3.5, 5.5] | 5.0 | 3.5 | 4.0 | 3.5 | 3.5 |
 – Cf(H I) |
3.0 | [2.0, 3.0] | 3.5 | − | − | − | − |
 – Cf(H I) |
3.0 | [2.0, 4.5] | 2.5 | − | − | − | − |
EW(Lyα) –  |
4.0 | [3.5, 4.0] | − | 3.0 | − | − | − |
fesc(Lyα) –  |
3.0 | [2.5, 3.5] | − | 2.5 | 2.5 | 3.0 | 2.5 |
| fesc(Lyα) – 10−0.4A(1216 Å) | 3.0 | [2.5, 3.5] | − | 2.5 | 2.5 | 2.5 | 2.5 |
 – 10−0.4A(912 Å) |
3.0 | [2.5, 3.0] | − | − | − | − | − |
 –  |
3.5 | [2.5, 4.5] | − | − | − | − | − |
Notes. (1) Tested correlation between the two variables, reported in Sect. 4; (2) trend significance level when all values are included, and when Cf(H I) is fixed to the upper limit in galaxies with only an upper bound. These values correspond to the significance levels quoted in the paper. (3) The interval of σ derived by performing a jackknife test; (4) same as (2) but fixing Cf(H I) to 0 in galaxies with only a upper bound to the H I covering fraction; (5) same as (2), but only including galaxies with z < 0.5; (6)–(8) significance level of the fesc(Lyα) trend when fesc(Lyα) is scaled-down by a factor of 1.5 for galaxies with (6) 
km s−1; (7) 
km s−1 and (8) 
km s−1. All significance level tests include the sample from McKinney et al. (2019) and Jaskot et al. (2019) when possible. Dashes indicate that the significance level remained unchanged with respect to (2) because the conditions applied did not affect the sample included.
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