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Table 1 Summary statistics

From: Coalitions and coordination in Washington think tanks: board interlock among Washington D.C.-based policy research and planning organizations

Variable

Percent true

Percent false

Has IG score

28.9

71.1

Has members

14.8

85.2

Hires contractors

55.6

44.4

Engages in lobbying

90.6

9.4

Variable

Mean

SD

Total revenue

$4,085,478.76

$10,572,496.46

Membership dues

$61,838.29

$332,845.65

Lobbying spending

$12,712.53

$151,517.58

Number of contractors

1.39

3.80

Contributions to democrats

$21,936.59

90,503.17

Contributions to republics

$9934.49

60,659.49

IGscore (all)

− 0.07

0.88

IGscore (real)

0.06

1.09

IGscore (imputed)

− 0.12

0.77