Informational video on preoperative anxiety and postoperative satisfaction prior to elective cesarean delivery: a systematic review and meta-analysis

Table 4 Use of the information video versus usual care

No of studies	Design	Risk of bias	Inconsistency	Indirectness	Imprecision	Publication bias	Use of the information video	Use of usual care	Pooled effect SMD (95% CI)	Final judgment
Preoperative anxiety
9	RCT^* And Non-randomized	Serious	Very serious	No serious	No serious	Suspected	506	514	SMD 0.22 lower, (95% CI 0.51 lower to 0.06 higher)	⊕⊖⊖⊖ Very Low
Post-operative satisfaction
5	RCT^* an Non-randomized	Serious	No serious	No serious	No Serious	Suspected	300	318	SMD 0.26 higher, (95% CI 0.10 higher to 0.42 higher)	⊕⊕⊕⊖ Moderate
CI = confidence interval; RCT = randomized controlled trial; SMD = standardized mean difference

GRADE Working Group grades of evidence
High certainty: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate certainty: We are moderately confident in the effect estimate; the true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low certainty: Our confidence in the effect estimate is limited; the true effect may be substantially different from the estimate of the effect
Very low certainty: We have very little confidence in the effect estimate; the true effect is likely to be substantially different from the estimate of effect

ISSN: 2050-7283