Summary of findings for the main comparison. Guided imagery compared to quiet rest for treating hypertension in pregnancy.

Guided imagery compared to quiet rest for treating hypertension in pregnancy
Population: pregnant women (between 30 and 36 weeks’ gestation) with elevated blood pressure Setting: university medical centre, US Navy hospital, local obstetricians in USA, hospitals in Atlantic Canada Intervention: guided imagery Comparison: quiet rest
Outcomes	Anticipated absolute effects*(95% CI)		Relative effect (95% CI)	No of participants (studies)	Certainty of the evidence (GRADE)	Comments
	Risk with quiet rest	Risk with guided imagery
Severe hypertension	See comment					None of the trials reported this outcome.
Severe pre‐eclampsia	See comment					None of the trials reported this outcome.
Perinatal death (stillbirths plus deaths in the first week of life)	See comment					None of the trials reported this outcome.
Antihypertensive drug use	371 per 1000	472 per 1000 (267 to 825)	RR 1.27 (95% CI 0.72 to 2.22)	69 (1 RCT)	⊕⊕⊝⊝ low a
*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI). CI: Confidence interval; RR: Risk Ratio;
GRADE Working Group grades of evidence High certainty. Further research is very unlikely to change our confidence in the estimate of effect. Moderate certainty. Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. Low certainty. Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. Very low certainty. We are very uncertain about the estimate.

^aDowngraded (‐2) for very serious imprecision ‐ small trial and wide confidence intervals