Market Integration Demand and the Growth of Firms — expanded estimators

Jensen and Miller (2018), AER. https://doi.org/10.1257/aer.20161965

7 specifications. Effects are in outcome standard deviations; intervals are 95%.

Treatment adoption

Treatment adoption timing

S04-P001: seeded sample of 100 of 142 eligible units. Purple untreated; yellow treated; white unobserved.

Auditor Assessment

MI-T4-C1 · Table 4 column 1 · Data & fit details

1,522 observations · 142 units · 142 clusters · 105 treated / 37 control units.

Estimate comparison

S04-P001: point estimates, targets and available 95% intervals
Estimator Estimate (SDs) SE 95% CI Averaging
Static TWFE 0.001 0.019 [-0.037, 0.039] Coefficient
Dynamic TWFE 0.070 0.035 [0.001, 0.140] Treated cells
BJS / did2s 0.081 0.041 [-0.000, 0.162] Treated cells
Sun–Abraham 0.082 0.040 [0.002, 0.162] Treated cells
CS-DID (equal event-time) 0.351 0.092 [0.171, 0.532] Equal post-event times
CS-DID (treated cells) 0.246 0.064 [0.121, 0.372] Treated cells
SDID 0.224 — — Treated cells
Matrix completion 0.083 — — Treated cells
Horizontal ridge 0.223 — — Treated cells
Event studies

Periods −10 to +10; pointwise 95% intervals where available.

Dynamic TWFE event study BJS / did2s event study Sun–Abraham event study CS-DID event study SDID event study Matrix completion event study Horizontal ridge event study

Labor Value per Boat

MI-T4-C2 · Table 4 column 2 · Data & fit details

1,519 observations · 142 units · 142 clusters · 105 treated / 37 control units.

Estimate comparison

S04-P002: point estimates, targets and available 95% intervals
Estimator Estimate (SDs) SE 95% CI Averaging
Static TWFE -0.258 0.096 [-0.447, -0.069] Coefficient
Dynamic TWFE -0.795 0.083 [-0.958, -0.631] Treated cells
BJS / did2s -0.809 0.069 [-0.945, -0.673] Treated cells
Sun–Abraham -0.756 0.071 [-0.896, -0.615] Treated cells
CS-DID (equal event-time) -1.099 0.092 [-1.279, -0.918] Equal post-event times
CS-DID (treated cells) -0.827 0.082 [-0.987, -0.666] Treated cells
SDID -0.773 — — Treated cells
Matrix completion -0.802 — — Treated cells
Horizontal ridge -0.849 — — Treated cells
Event studies

Periods −10 to +10; pointwise 95% intervals where available.

Dynamic TWFE event study BJS / did2s event study Sun–Abraham event study CS-DID event study SDID event study Matrix completion event study Horizontal ridge event study

Material Value per Boat

MI-T4-C3 · Table 4 column 3 · Data & fit details

1,522 observations · 142 units · 142 clusters · 105 treated / 37 control units.

Estimate comparison

S04-P003: point estimates, targets and available 95% intervals
Estimator Estimate (SDs) SE 95% CI Averaging
Static TWFE -0.014 0.086 [-0.184, 0.156] Coefficient
Dynamic TWFE -0.022 0.113 [-0.246, 0.202] Treated cells
BJS / did2s -0.002 0.108 [-0.217, 0.212] Treated cells
Sun–Abraham 0.001 0.122 [-0.241, 0.242] Treated cells
CS-DID (equal event-time) 0.025 0.123 [-0.217, 0.266] Equal post-event times
CS-DID (treated cells) 0.052 0.116 [-0.176, 0.280] Treated cells
SDID -0.065 — — Treated cells
Matrix completion -0.012 — — Treated cells
Horizontal ridge 0.100 — — Treated cells
Event studies

Periods −10 to +10; pointwise 95% intervals where available.

Dynamic TWFE event study BJS / did2s event study Sun–Abraham event study CS-DID event study SDID event study Matrix completion event study Horizontal ridge event study

Variable Costs per Boat

MI-T4-C4 · Table 4 column 4 · Data & fit details

1,519 observations · 142 units · 142 clusters · 105 treated / 37 control units.

Estimate comparison

S04-P004: point estimates, targets and available 95% intervals
Estimator Estimate (SDs) SE 95% CI Averaging
Static TWFE -0.259 0.098 [-0.452, -0.066] Coefficient
Dynamic TWFE -0.794 0.084 [-0.961, -0.627] Treated cells
BJS / did2s -0.806 0.069 [-0.944, -0.669] Treated cells
Sun–Abraham -0.753 0.071 [-0.894, -0.612] Treated cells
CS-DID (equal event-time) -1.092 0.093 [-1.273, -0.910] Equal post-event times
CS-DID (treated cells) -0.818 0.083 [-0.980, -0.656] Treated cells
SDID -0.776 — — Treated cells
Matrix completion -0.798 — — Treated cells
Horizontal ridge -0.836 — — Treated cells
Event studies

Periods −10 to +10; pointwise 95% intervals where available.

Dynamic TWFE event study BJS / did2s event study Sun–Abraham event study CS-DID event study SDID event study Matrix completion event study Horizontal ridge event study

Labor Value per Boat-Year

MI-T4-C5 · Table 4 column 5 · Data & fit details

1,519 observations · 142 units · 142 clusters · 105 treated / 37 control units.

Estimate comparison

S04-P005: point estimates, targets and available 95% intervals
Estimator Estimate (SDs) SE 95% CI Averaging
Static TWFE -0.073 0.038 [-0.148, 0.003] Coefficient
Dynamic TWFE -0.328 0.044 [-0.415, -0.241] Treated cells
BJS / did2s -0.317 0.039 [-0.394, -0.239] Treated cells
Sun–Abraham -0.317 0.045 [-0.405, -0.229] Treated cells
CS-DID (equal event-time) -0.661 0.073 [-0.804, -0.519] Equal post-event times
CS-DID (treated cells) -0.491 0.056 [-0.602, -0.380] Treated cells
SDID -0.441 — — Treated cells
Matrix completion -0.319 — — Treated cells
Horizontal ridge -0.477 — — Treated cells
Event studies

Periods −10 to +10; pointwise 95% intervals where available.

Dynamic TWFE event study BJS / did2s event study Sun–Abraham event study CS-DID event study SDID event study Matrix completion event study Horizontal ridge event study

Material Value per Boat-Year

MI-T4-C6 · Table 4 column 6 · Data & fit details

1,522 observations · 142 units · 142 clusters · 105 treated / 37 control units.

Estimate comparison

S04-P006: point estimates, targets and available 95% intervals
Estimator Estimate (SDs) SE 95% CI Averaging
Static TWFE -0.004 0.037 [-0.077, 0.068] Coefficient
Dynamic TWFE -0.067 0.058 [-0.181, 0.047] Treated cells
BJS / did2s -0.051 0.051 [-0.152, 0.050] Treated cells
Sun–Abraham -0.070 0.061 [-0.191, 0.051] Treated cells
CS-DID (equal event-time) -0.307 0.086 [-0.476, -0.138] Equal post-event times
CS-DID (treated cells) -0.215 0.070 [-0.352, -0.078] Treated cells
SDID -0.227 — — Treated cells
Matrix completion -0.067 — — Treated cells
Horizontal ridge -0.163 — — Treated cells
Event studies

Periods −10 to +10; pointwise 95% intervals where available.

Dynamic TWFE event study BJS / did2s event study Sun–Abraham event study CS-DID event study SDID event study Matrix completion event study Horizontal ridge event study

Variable Costs per Boat-Year

MI-T4-C7 · Table 4 column 7 · Data & fit details

1,519 observations · 142 units · 142 clusters · 105 treated / 37 control units.

Estimate comparison

S04-P007: point estimates, targets and available 95% intervals
Estimator Estimate (SDs) SE 95% CI Averaging
Static TWFE -0.065 0.036 [-0.136, 0.007] Coefficient
Dynamic TWFE -0.298 0.044 [-0.385, -0.212] Treated cells
BJS / did2s -0.286 0.039 [-0.363, -0.209] Treated cells
Sun–Abraham -0.289 0.044 [-0.377, -0.201] Treated cells
CS-DID (equal event-time) -0.625 0.073 [-0.768, -0.481] Equal post-event times
CS-DID (treated cells) -0.462 0.057 [-0.573, -0.351] Treated cells
SDID -0.418 — — Treated cells
Matrix completion -0.290 — — Treated cells
Horizontal ridge -0.441 — — Treated cells
Event studies

Periods −10 to +10; pointwise 95% intervals where available.

Dynamic TWFE event study BJS / did2s event study Sun–Abraham event study CS-DID event study SDID event study Matrix completion event study Horizontal ridge event study