Table 6 Cox regression of factors involved in publication time

Randomised

− 0.21

0.20

0. 653

0.82 (0.33; 1.99)

Treatment arms^a

1.87

0.392

 2 arms

0.55

0.87

0.351

1.74 (0.54; 5.56)

 3–6 arms

0.36

0.34

0.562

1.43 (0.43; 4.73)

Any control used

0.095

0.07

0.797

1.10 (0.53; 2.27)

Intervention type^b

18.64

< 0.001*

 Behavioural

0.51

8.65

0.003*

1.67 (1.19; 2.34)

 Drug and behavioural

1.16

16.79

< 0.001*

3.20 (1.84; 5. 58)

 Procedure/device

0.74

5.54

0.019*

2.09 (1.13; 3.87)

Any sponsor, university

0.26

3.88

0.049*

1.30 (1.00; 1.70)

Registered before completed

0.33

4.10

0.043*

1.40 (1.01; 1.93)