Skip to main content

Table 2 Rate ratios (95% CI) for reduction in suicidal behaviours between study periods in the intervention and control groups, with intervention effect ratio (reduction in intervention period in intervention arm relative to control arm)

From: Preventing suicidal behaviours with a multilevel intervention: a cluster randomised controlled trial

 

Rate ratio (95% CIa)

Intervention effect ratiob

 

(intervention period relative to baseline)

(95% CIa)

Outcome variable

Intervention

Control

 

ISH presentations and self-inflicted death events

0.91 (0.81–1.02)

0.85 (0.76–0.95)

1.07 (0.82–1.40)

ISH presentations only

0.91 (0.80–1.02)

0.85 (0.75–0.95)

1.07 (0.82–1.40)

Self-inflicted death events only

1.17 (0.84–1.65)

1.01 (0.77–1.31)

1.18 (0.51–2.70)

  1. a95% confidence interval for estimate
  2. bIntervention effect ratio is the between-period change in the intervention arm divided by the between-period change in the control arm. A ratio less than one indicates more favourable change in the intervention arm than the control arm; a ratio greater than one indicates more favourable change in the control arm than in the intervention arm