Regression output table for research articles

[Huong Giang]

Hi, I created a regression output variables and I had some omitted variables as

v1 v2
(1)
Base
VARIABLES Post-treatment

Treatment 1 - Phase 1 = 1 0.335
(0.566)
Treatment 2 - Phase 1 = 1 -0.383
(0.577)
Group 1 = 1 3.509***
(0.763)
time = 2, omitted -

time = 3, omitted -

time = 4, omitted -

time = 5, omitted -

time = 6, omitted -

time = 7, omitted -

time = 8, omitted -

time = 9, omitted -

time = 10, omitted -

time = 11, omitted -

time = 12, omitted -

time = 13 -0.724**
(0.346)
time = 14 -0.824***
(0.273)
time = 15 -1.224***
(0.309)
time = 16 -0.824***
(0.288)
time = 17 -0.744**
(0.356)
time = 18, omitted -

Constant 1.666***
(0.399)

Observations 299
Number of BRANCH_ID2 50
Cluster Branch

How can I remove the omitted one?