Evidence-Based Complementary and Alternative Medicine

Review Article

The Effect of Lavender (Lavandula stoechas L.) on Reducing Labor Pain: A Systematic Review and Meta-Analysis

Table 1

Evaluation of quality of quantitative studies using STROBE tool (N = 13).
Author(s) and year of publicationIntroductionMethodsResultsDiscussion and conclusionScore
Title and abstractIntroductionStudy methodPerforming environmentContributorsVariablesData source and measurement methodBiasSample sizeQuantitative variablesStatistical analysis methodsDescriptive dataParticipants’ reportsReport the original dataMain results of the studyOther analyzesReport key resultsLimitationsInterpretation of resultsGeneralizationBudget and financial support
1Vakilian et al., 2012 [23]+++++++
+		−−+
+		+++++−+++−−Medium
2Alavi et al., 2010 [24]+++++++
+		−−+
+		+++
+		+
+		+−+−+
+		−−High
3Seraji and Vakilian, 2011 [25]+++++++
+		−++
+		+++++++++
+		−−High
4Leghaei and Hosseini, 2018 [26]+++++
+		+
+		+
+		−++
+		+++
+		++
+		++++
+		−−High
5Hosseini et al., 2016 [27]+++++++
+		−++
+		+++
+		++++++
+		−−High
6Nikbakht et al., 2014 [28]+++++++
+		−++
+		+++++++++
+		−−High
7Nehbandanii et al., 2018 [29]+++++++
+		−++
+		+++++++++
+		−−High
8Sobhani et al., 2006 [30]+++++++
+		−+++++++++++
−−Medium
9Khani et al., 2013 [31]+++++++
−+++++++++++
−−Medium
10Houshyar et al., 2015 [32]+++++++
+		−+++++++++++−−Medium
11Hadi and Hanid, 2011 [33]+++++++−+++++++++++−−Medium
12Yazdkhasti and Pirak, 2016 [34]+++++++
−+++++++++++−−Medium
13Olapour et al., 2013 [35]+++++++−−++++++++++−−Medium