Table 2

Diosmectite compared with placebo for acute diarrhoea

OutcomesNo of participants (studies)
Follow-up
Quality of the evidence (GRADE)Relative effect (95% CI)Anticipated absolute effects
Risk with placeboRisk difference with diosmectite (95% CI)
Duration of acute diarrhoea
Scale from: 24 to 168.
2002 (11 studies)
7 days
⊕⊕⊝⊝
LOW†‡
due to risk of bias, publication bias
N/AThe mean duration of acute diarrhoea in the control groups was
33.4 h to 117.71 h
The mean duration of acute diarrhoea in the intervention groups was
23.39 lower
(28.77 to 18.01 lower)
Cure rate by 48 h286 (4 studies)⊕⊝⊝⊝
VERY LOW†‡§
due to risk of bias, imprecision, publication bias
OR 13.08
(7.16 to 23.88)
Study population
184 per 1000563 more per 1000
(from 434 more to 659 more)
Cure rate by 72 h254 (4 studies)⊕⊝⊝⊝
VERY LOW†‡§¶
due to risk of bias, imprecision, publication bias
OR 5.28
(2.87 to 9.68)
Study population
508 per 1000337 more per 1000
(from 240 more to 401 more)
Cure rate by day 5254 (4 studies)⊕⊝⊝⊝
VERY LOW†‡§¶
due to risk of bias, inconsistency, imprecision
OR 4.44
(1.66 to 11.84)
Study population
841 per 1000118 more per 1000
(from 57 more to 143 more)
Cure rate by day 71000
(2 studies)
⊕⊕⊕⊝
MODERATE†¶
due to risk of bias
OR 1.74
(1.19 to 2.54)
Study population
840 per 100061 more per 1000
(from 22 more to 90 more)
Stool output (volume)545 (2 studies)⊕⊕⊕⊝
MODERATE§
due to imprecision
N/AThe mean stool output (volume) in the intervention groups was
10.13 lower (24.19 lower to 3.93 higher)
Stool output (frequency)196 (3 studies)⊕⊕⊕⊝
MODERATE§,**
due to risk of bias, imprecision, large effect
OR 32.33
(14.55 to 71.83)
Study population
188 per 1000694 more per 1000 (from 583 more to 756 more)
  • High quality: Further research is very unlikely to change our confidence in the estimate of effect.

  • Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.

  • Low quality: 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 quality: We are very uncertain about the estimate.

  • *The basis for the assumed risk (eg, the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% CI) is based on the assumed risk in the comparison group (ie, the event rate in the placebo group for the dichotomous outcomes and the mean placebo group risk for continuous outcomes) and the relative effect of the intervention (and its 95% CI).

  • GRADE Working Group grades of evidence.

  • †Most are open label trials.

  • ‡Not resembling inverted funnel plot.

  • §Small sample size and large effect size.

  • ¶No consistent effect.

  • **Large relative effect.

  • N/A, Not applicable.