Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

513 questions · 543 findings · 92 reviews · Headline outcomes only

No studies found 101 · 18.6%GRADE not reported 29 · 5.3%Very low 151 · 27.8%Low 150 · 27.6%Moderate 92 · 16.9%High 20 · 3.7%

Multiple methods of breastfeeding support (including social, educational and/or physical support) vs usual care

Breastfeeding · pregnant or lactating women who were overweight or obese

It is very uncertain whether multiple methods of breastfeeding support (including social,… changes any breastfeeding at 6 months compared with usual care (very low certainty).

2 findings from 1 review

Multiple methods of breastfeeding support (including social, educational and/or physical support) vs usual care

Non‐initiation of breastfeeding · pregnant or lactating women who were overweight or obese

It is very uncertain whether multiple methods of breastfeeding support (including social,… changes non‐initiation of breastfeeding compared with usual care (very low certainty).

1 finding from 1 review

Multiple methods of breastfeeding support (including social, educational and/or physical support) vs usual care

Exclusive breastfeeding at 4‐6 weeks · pregnant or lactating women who were overweight or obese

It is very uncertain whether multiple methods of breastfeeding support (including social,… changes exclusive breastfeeding at 4‐6 weeks compared with usual care (very low certainty).

1 finding from 1 review

Multiple methods of breastfeeding support (including social, educational and/or physical support) vs usual care

Exclusive breastfeeding at 6 months · pregnant or lactating women who were overweight or obese

It is very uncertain whether multiple methods of breastfeeding support (including social,… changes exclusive breastfeeding at 6 months compared with usual care (very low certainty).

1 finding from 1 review

Surgical vs non‐surgical treatment

Kujala patellofemoral disorders score Scale from: 0 to 100 (higher scores = better function) · people with lateral patellar dislocation

It is very uncertain whether surgical changes knee and physical functiona Measured using the Kujala patellofemoral… compared with non‐surgical treatment (very low certainty).

1 finding from 1 review

Systemic corticosteroids plus intranasal steroid/mucolytic/decongestant vs no intervention

Psychophysical testing for recovery of sense of smell · adults with olfactory dysfunction for ≥ 4 weeks following COVID‐19 infection

It is very uncertain whether systemic corticosteroids plus intranasal… changes psychophysical testing for recovery of sense of smell compared with no intervention (very low certainty).

1 finding from 1 review