Skip to main content

Table 2 Item response characteristics for the three measures of suicidality

From: Suicidal ideation during treatment of depression with escitalopram and nortriptyline in Genome-Based Therapeutic Drugs for Depression (GENDEP): a clinical trial

 

Discrimination parameter (α)

Response option thresholds

  

β1

β2

β3

β4

β5

β6

MADRS suicidality

7.1

0.03

0.8

1.53

1.93

2.57

2.97

HRSD-17 suicidality

6.1

0.4

1.26

1.99

3.11

  

BDI suicidality

3.1

0.64

1.98

2.66

   
  1. The threshold parameter β shows the standardised level of severity at which subsequent response options become more likely than the previous response option.
  2. BDI = Beck Depression Inventory; HRSD = Hamilton Rating Scale for Depression; MADRS = Montgomery-Asberg Depression Rating Scale.
Back to article page

BMC Medicine

ISSN: 1741-7015

Contact us