Volume regression
Selected publication sample; no causal interpretation
What one row represents
monthly descriptive regression
Units: Elasticity, rank correlation, R squared and HC3 SE
Data preview
First 2 rows of 2. Choose the columns to inspect; the download includes every field.
Choose preview columns (13 available)
| Observation startdate_start | N country rowsn_country_rows | N log positiven_log_positive | Excluded zero or missing usage shareexcluded_zero_or_missing_usage_share | Spearmanspearman | Interceptintercept | Slopeslope | Slope hc3 seslope_hc3_se | Slope hc3 normal lowslope_hc3_normal_low | Slope hc3 normal highslope_hc3_normal_high | R squaredr_squared | Modelmodel | Inferenceinference |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-04-01 | 114 | 114 | 0 | 0.9922657758132934 | 5.467511504824861 | 1.12144799326881 | 0.05139337155180216 | 1.0207169850272777 | 1.2221790015103422 | 0.9371404609918104 | ln(positive published task cells) = intercept + slope * ln(global usage share in percentage points) | Descriptive selected-country association; HC3 normal approximation is not causal identification |
| 2026-05-01 | 121 | 121 | 0 | 0.9959729034009852 | 5.722176865958129 | 1.0344390901454863 | 0.04652086456776883 | 0.9432581955926594 | 1.1256199846983133 | 0.9349938878395784 | ln(positive published task cells) = intercept + slope * ln(global usage share in percentage points) | Descriptive selected-country association; HC3 normal approximation is not causal identification |
Field definitions
Blank/NA means unavailable or not applicable unless an explicit status field states otherwise; numeric zero retains its stated publication/source meaning
- Observation start
date_start Source observation-window start, not retrieval date
Unit: date- N country rows
n_country_rows Field retained in table schema; see docs/method_country.md, docs/country_statistics.md or docs/piaac_validation.md for its source-specific definition
Unit: see method/source- N log positive
n_log_positive Countries with positive nonmissing volume and positive task counts included in log regression
Unit: count- Excluded zero or missing usage share
excluded_zero_or_missing_usage_share Field retained in table schema; see docs/method_country.md, docs/country_statistics.md or docs/piaac_validation.md for its source-specific definition
Unit: see method/source- Spearman
spearman Pearson correlation of average ranks on the stated common sample
Unit: correlation- Intercept
intercept Field retained in table schema; see docs/method_country.md, docs/country_statistics.md or docs/piaac_validation.md for its source-specific definition
Unit: see method/source- Slope
slope OLS slope of log positive task-cell count on log global usage share
Unit: elasticity- Slope hc3 se
slope_hc3_se HC3 heteroskedasticity-robust slope standard error; descriptive selected-country sample
Unit: standard error- Slope hc3 normal low
slope_hc3_normal_low Field retained in table schema; see docs/method_country.md, docs/country_statistics.md or docs/piaac_validation.md for its source-specific definition
Unit: see method/source- Slope hc3 normal high
slope_hc3_normal_high Field retained in table schema; see docs/method_country.md, docs/country_statistics.md or docs/piaac_validation.md for its source-specific definition
Unit: see method/source- R squared
r_squared Explained variation in log task-cell count from the descriptive OLS fit
Unit: fraction- Model
model Frozen local inference model tag; the accompanying digest identifies the tested model configuration
Unit: model identifier- Inference
inference Field retained in table schema; see docs/method_country.md, docs/country_statistics.md or docs/piaac_validation.md for its source-specific definition
Unit: see method/source
Technical provenance and reuse terms
Primary key: date_start
Source table: outputs/evidence/volume_regression.csv
SHA-256: 8987ad5b31c77b260f9314ce4f6b8ff53086e135a0ae8e9f7e8c25ff021e1828
Source attribution and reuse terms · Machine-readable manifest