Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

699 questions · 745 findings · 185 reviews

No studies found 180 · 24.2%GRADE not reported 76 · 10.2%Very low 194 · 26%Low 154 · 20.7%Moderate 110 · 14.8%High 31 · 4.2%

PTA vs stent

Technical success · people with infrapopliteal arterial lesions in chronic limb‐threatening ischaemia

PTA probably leads to higher technical success ITT No. of limbs: 476 (5 RCTs) compared with stent (moderate certainty).

2 findings from 1 review

PTA vs stent

Procedural complications · people with infrapopliteal arterial lesions in chronic limb‐threatening ischaemia

PTA showed no clear difference in procedural complications ITT No. of participants: 360 (5 RCTs) compared with stent (moderate certainty).

2 findings from 1 review

PTA vs stent

Primary patency ( · people with infrapopliteal arterial lesions in chronic limb‐threatening ischaemia

PTA showed no clear difference in primary patency < 6 months ITT No. of lesions: 456 (3 RCTs) compared with stent (moderate certainty).

2 findings from 1 review

Selective serotonin reuptake inhibitors vs tricyclic antidepressants (TCAs)

Acceptability ‐ total dropouts · patients with cancer and depression

It is very uncertain whether selective serotonin reuptake inhibitors (SSRIs) changes dropouts due to any cause (acceptability) compared with tricyclic antidepressants (TCAs) (very low certainty).

1 finding from 1 review

Fluoride concentration relative to the acceptable range (electrometric ion-selective electrode measurement; acceptable range mostly 0.6-0.8 ppmF) vs None (descriptive proportion meta-analysis)

Water samples with fluoride concentration below the acceptable range · Artificially fluoridated public water supply in Brazilian cities (water samples under external control)

In the Northeast Brazilian region, a pooled 79.7% of water samples had fluoride below the acceptable range; ungraded.

2 findings from 1 review

Fluoride concentration relative to the acceptable range (electrometric ion-selective electrode measurement; acceptable range mostly 0.6-0.8 ppmF) vs None (descriptive proportion meta-analysis)

Water samples with fluoride concentration above the acceptable range · Artificially fluoridated public water supply in Brazilian cities (water samples under external control)

In the Southeast Brazilian region, a pooled 11.5% of water samples had fluoride above the acceptable range; ungraded.

2 findings from 1 review

Fluoride concentration relative to the acceptable range (electrometric ion-selective electrode measurement; acceptable range mostly 0.6-0.8 ppmF) vs None (descriptive proportion meta-analysis)

Water samples with fluoride concentration outside the acceptable range · Artificially fluoridated public water supply in Brazilian cities (water samples under external control)

In Brazilian cities using external control, more than half of artificially fluoridated public water supply samples (pooled 56.6%, 95% CI 45.5 to 67.3) had fluoride concentrations outside the acceptable range, with very high heterogeneity (I2=99.5%); ungraded.

3 findings from 1 review

LHWs to promote immunisation uptake in children vs usual care

Immunisation schedule up to date Interviews with mothers, record reviews · patients with improving immunisation uptake among children < 2 years whose vaccination is not up to date

LHWs to promote immunisation uptake in children probably leads to higher immunisation schedule up to date Interviews with mothers, record… compared with usual care (moderate certainty).

1 finding from 1 review

Noradrenaline reuptake inhibitors vs placebo

Mental state: significant response or improvement in negative symptoms (PANSS negative subscale, high = worse) ‐ short term (12 weeks) · adults with schizophrenia

It is very uncertain whether noradrenaline reuptake inhibitors changes mental state: significant response or improvement in negative… compared with placebo (very low certainty).

1 finding from 1 review

Noradrenaline reuptake inhibitors vs placebo

Clinical global response: significant response or improvement in global status (CGI‐S, high = worse) ‐ short term (4 weeks) · adults with schizophrenia

It is very uncertain whether noradrenaline reuptake inhibitors changes clinical global response: significant response or improvement in… compared with placebo (very low certainty).

1 finding from 1 review