Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,245 questions · 1,274 findings · 321 reviews

No studies found 247 · 19.4%GRADE not reported 195 · 15.3%Very low 372 · 29.2%Low 282 · 22.1%Moderate 141 · 11.1%High 37 · 2.9%

Fluoride toothpaste vs Non-fluoride (0 ppm F) placebo toothpaste

Proportion developing new caries · Children and adolescents aged 16 years or less

Fluoride toothpaste showed no clear difference in proportion of children developing one or more new caries compared with placebo (non-fluoride) toothpaste; GRADE not reported.

1 finding from 1 review

Topical fluoride therapy (toothpaste, mouthrinse, gel or varnish; any fluoride agent/concentration; frequency at least once a year) vs placebo or no treatment

Proportion developing new caries · Children and adolescents aged 16 years or younger (permanent dentition)

Topical fluoride therapy (toothpaste, mouthrinse, gel or varnish;… led to lower proportion of children developing one or more new caries compared with placebo or no treatment; GRADE not reported.

1 finding from 1 review

Brushed less than once per day vs Brushed once or more per day

Fluorosis (percentage prevalence in permanent teeth) · Children exposed to topical fluoride when under 6 years old; fluorosis assessed in permanent teeth at 6 to 18 years

Brushed less than once per day may leads to lower fluorosis (percentage prevalence in permanent teeth) compared with brushed once or more per day (low certainty).

1 finding from 1 review

Used a pea-sized amount of fluoride toothpaste or less vs Used more than a pea-sized amount

Fluorosis (percentage prevalence in permanent teeth) · Children exposed to topical fluoride when under 6 years old; fluorosis assessed in permanent teeth at 6 to 18 years

It is very uncertain whether used a pea-sized amount of fluoride toothpaste or less changes fluorosis (percentage prevalence in permanent teeth) compared with used more than a pea-sized amount (very low certainty).

1 finding from 1 review

Fluoride toothpaste less than 1000 ppm (lower concentration) vs Fluoride toothpaste 1000 ppm or more (higher concentration)

Fluorosis (percentage prevalence in permanent teeth) · Children exposed to topical fluoride when under 6 years old; fluorosis assessed in permanent teeth at 6 to 18 years

It is very uncertain whether fluoride toothpaste less than 1000 ppm (lower concentration) changes fluorosis (percentage prevalence in permanent teeth) compared with fluoride toothpaste 1000 ppm or more (higher concentration) (very low certainty).

2 findings from 1 review

Brushed less than twice per day vs Brushed twice or more per day

Fluorosis (percentage prevalence in permanent teeth) · Children exposed to topical fluoride when under 6 years old; fluorosis assessed in permanent teeth at 6 to 18 years

It is very uncertain whether brushed less than twice per day changes fluorosis (percentage prevalence in permanent teeth) compared with brushed twice or more per day (very low certainty).

2 findings from 1 review

Anticipated low‐responders: higher vs lower dose of FSH

300/450 IU vs 150 IU · women undergoing IVF/ICSI who are anticipated to have a low‐response to stimulation based on one or more ORT measure

Anticipated low responders: higher showed no clear difference in 300/450 IU vs 150 IU compared with lower dose of FSH (low certainty).

1 finding from 1 review

Anticipated low‐responders: higher vs lower dose of FSH

400/450 IU vs 300 IU · women undergoing IVF/ICSI who are anticipated to have a low‐response to stimulation based on one or more ORT measure

Anticipated low responders: higher showed no clear difference in 400/450 IU vs 300 IU compared with lower dose of FSH (low certainty).

1 finding from 1 review

Anticipated low‐responders: higher vs lower dose of FSH

IU vs 450 IU · women undergoing IVF/ICSI who are anticipated to have a low‐response to stimulation based on one or more ORT measure

Anticipated low responders: higher showed no clear difference in IU vs 450 IU compared with lower dose of FSH (low certainty).

1 finding from 1 review

Used less than half of the brush of fluoride toothpaste vs Used half or more of the brush

Fluorosis (percentage prevalence in permanent teeth) · Children exposed to topical fluoride when under 6 years old; fluorosis assessed in permanent teeth at 6 to 18 years

It is very uncertain whether used less than half of the brush of fluoride toothpaste changes fluorosis (percentage prevalence in permanent teeth) compared with used half or more of the brush (very low certainty).

1 finding from 1 review

Attention deficit hyperactivity disorder (ADHD)‐related drugs vs placebo

Aggression · participants (any age) with a clinical diagnosis of ASD who have displayed one or more unwanted or challenging behaviours at baseline…

The review found no eligible studies for this question.

1 finding from 1 review

Attention deficit hyperactivity disorder (ADHD)‐related drugs vs placebo

Adverse effects · participants (any age) with a clinical diagnosis of ASD who have displayed one or more unwanted or challenging behaviours at baseline…

It is very uncertain whether attention deficit hyperactivity disorder (ADHD)‐related drugs changes adverse effects compared with placebo (very low certainty).

1 finding from 1 review

Atypical antipsychotics vs placebo

Adverse effects (AEs) · participants (any age) with a clinical diagnosis of ASD who have displayed one or more unwanted or challenging behaviours at baseline…

Atypical antipsychotics may leads to higher adverse effects (AEs) compared with placebo (low certainty).

1 finding from 1 review