Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,288 questions · 3,354 findings · 516 reviews · Headline outcomes only

No studies found 720 · 21.5%GRADE not reported 164 · 4.9%Very low 950 · 28.3%Low 932 · 27.8%Moderate 434 · 12.9%High 154 · 4.6%

Tailoring asthma treatment using FeNO vs clinical symptoms

Asthma exacerbations · children with asthma

It is very uncertain whether tailoring asthma treatment using fractional exhaled nitric oxide changes number of asthma exacerbations per 52 weeks (exacerbation rate) compared with clinical symptoms (very low certainty).

1 finding from 1 review

Intrauterine infusion/injection of autologous platelet‐rich plasma vs placebo or no intervention

Adverse events: preterm delivery · women undergoing assisted reproduction

Intrauterine infusion/injection of autologous platelet‐rich plasma may leads to higher adverse events: preterm delivery compared with no intervention or placebo (low certainty).

1 finding from 1 review

Intrauterine infusion/injection of autologous platelet‐rich plasma vs placebo or no intervention

Live birth or ongoing pregnancy · women undergoing assisted reproduction

It is very uncertain whether intrauterine infusion/injection of autologous platelet‐rich plasma changes live birth (or ongoing pregnancy) compared with no intervention or placebo (very low certainty).

1 finding from 1 review

Intrauterine infusion/injection of autologous platelet‐rich plasma vs placebo or no intervention

Miscarriage · women undergoing assisted reproduction

It is very uncertain whether intrauterine infusion/injection of autologous platelet‐rich plasma changes miscarriage compared with no intervention or placebo (very low certainty).

1 finding from 1 review

Intrauterine infusion/injection of autologous platelet‐rich plasma vs placebo or no intervention

Clinical pregnancy · women undergoing assisted reproduction

It is very uncertain whether intrauterine infusion/injection of autologous platelet‐rich plasma changes clinical pregnancy compared with no intervention or placebo (very low certainty).

1 finding from 1 review

Intrauterine infusion/injection of autologous platelet‐rich plasma vs placebo or no intervention

Adverse event ‐ multiple pregnancy · women undergoing assisted reproduction

It is very uncertain whether intrauterine infusion/injection of autologous platelet‐rich plasma changes adverse events: multiple pregnancy compared with no intervention or placebo (very low certainty).

1 finding from 1 review

Intrauterine infusion/injection of autologous platelet‐rich plasma vs placebo or no intervention

Adverse events: ectopic pregnancy · women undergoing assisted reproduction

It is very uncertain whether intrauterine infusion/injection of autologous platelet‐rich plasma changes adverse events: ectopic pregnancy compared with no intervention or placebo (very low certainty).

1 finding from 1 review

Neuromuscular electrical stimulation + other intervention (e.g. exercise) vs other intervention alone

Knee pain (short term) VAS scale: 0 to 10; higher score = worse pain. · patients with patellofemoral pain syndrome (symptoms > 4 weeks (1 study); symptoms > 6 weeks (1 study); symptoms > 8 weeks (1 study); not…

It is very uncertain whether neuromuscular electrical stimulation + other intervention (e.g.… changes knee pain (short term) VAS scale: 0 to 10; higher score = worse pain. compared with same other intervention only (very low certainty).

1 finding from 1 review

Neuromuscular electrical stimulation + other intervention (e.g. exercise) vs other intervention alone

Knee pain (long term) VAS scale: 0 to 10; higher score = worse pain. · patients with patellofemoral pain syndrome (symptoms > 4 weeks (1 study); symptoms > 6 weeks (1 study); symptoms > 8 weeks (1 study); not…
1 finding from 1 review

Neuromuscular electrical stimulation + other intervention (e.g. exercise) vs other intervention alone

Knee function (short term) · patients with patellofemoral pain syndrome (symptoms > 4 weeks (1 study); symptoms > 6 weeks (1 study); symptoms > 8 weeks (1 study); not…

It is very uncertain whether neuromuscular electrical stimulation + other intervention (e.g.… changes knee function (short term) compared with same other intervention only (very low certainty).

1 finding from 1 review

Neuromuscular electrical stimulation + other intervention (e.g. exercise) vs other intervention alone

Kujala patellofemoral disorders score Scale from: 0 to 100 (higher scores = better function) · patients with patellofemoral pain syndrome (symptoms > 4 weeks (1 study); symptoms > 6 weeks (1 study); symptoms > 8 weeks (1 study); not…
1 finding from 1 review

Neuromuscular electrical stimulation + other intervention (e.g. exercise) vs other intervention alone

Adverse events ‐ not measured · patients with patellofemoral pain syndrome (symptoms > 4 weeks (1 study); symptoms > 6 weeks (1 study); symptoms > 8 weeks (1 study); not…

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Self‐controlled case series ‐ varicella zoster ‐ varicella zoster risk period (0 to 90 days) · children 9 months to 15 years old

The intervention showed no clear difference in self‐controlled case series ‐ varicella zoster ‐ varicella zoster… (low certainty).

1 finding from 1 review

H. pylori eradication therapy vs control

Incidence of gastric cancer ‐ modified ITT analysis Histological examination · healthy asymptomatic H. pylori‐infected individuals

H. pylori eradication therapy probably leads to lower incidence of gastric cancer ‐ modified ITT analysisHistological… compared with control (moderate certainty).

1 finding from 1 review