Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,038 questions · 2,118 findings · 339 reviews

No studies found 323 · 15.3%GRADE not reported 166 · 7.8%Very low 552 · 26.1%Low 592 · 28%Moderate 340 · 16.1%High 145 · 6.8%

Lower‐dose methylnaltrexone vs higher dose

Adverse events · people receiving palliative care irrespective of whether they had cancer with opioid‐induced bowel dysfunction

Methylnaltrexone lower dose showed no clear difference in adverse events compared with higher dose (low certainty).

1 finding from 1 review

Lower blood pressure targets vs standard blood pressure targets

Total serious adverse events · cardiovascular disease with high blood pressure

Lower blood pressure targets showed no clear difference in total serious adverse events compared with standard blood pressure targets (low certainty).

1 finding from 1 review

Lower blood pressure targets vs standard blood pressure targets

Cardiovascular mortality · cardiovascular disease with high blood pressure

Lower blood pressure targets showed no clear difference in cardiovascular mortality compared with standard blood pressure targets (moderate certainty).

1 finding from 1 review

Lower blood pressure targets vs standard blood pressure targets

Withdrawals due to adverse events · cardiovascular disease with high blood pressure

It is very uncertain whether lower blood pressure targets changes participant withdrawals due to adverse effects compared with standard blood pressure targets (very low certainty).

1 finding from 1 review

Chemotherapy plus lower‐dose radiation vs same chemotherapy plus higher‐dose radiation

Secondary malignant neoplasms · Patients with untreated Hodgkin lymphoma (early stages)

Chemotherapy plus lower‐dose radiation showed no clear difference in secondary malignant neoplasms compared with same chemotherapy plus higher‐dose radiation (low certainty).

1 finding from 1 review

Chemotherapy plus lower‐dose radiation vs same chemotherapy plus higher‐dose radiation

Death · Patients with untreated Hodgkin lymphoma (early stages)

Chemotherapy plus lower‐dose radiation showed no clear difference in death compared with same chemotherapy plus higher‐dose radiation (high certainty).

1 finding from 1 review

Chemotherapy plus lower‐dose radiation vs same chemotherapy plus higher‐dose radiation

Progression/relapse · Patients with untreated Hodgkin lymphoma (early stages)

Chemotherapy plus lower‐dose radiation showed no clear difference in progression/relapse compared with same chemotherapy plus higher‐dose radiation (high certainty).

1 finding from 1 review

Prophylactic valaciclovir (lower dose) vs Prophylactic valaciclovir (higher dose)

Presence/absence of HSV oral lesions · Patients being treated for cancer (acute leukaemia; chemotherapy or stem-cell transplantation)

Prophylactic valaciclovir (lower dose) showed no clear difference in presence/absence of HSV oral lesions compared with prophylactic valaciclovir (higher dose); GRADE not reported.

1 finding from 1 review

Prophylactic valaciclovir (lower dose) vs Prophylactic valaciclovir (higher dose)

Viral isolates · Patients being treated for cancer (acute leukaemia; chemotherapy or stem-cell transplantation)
1 finding from 1 review

Prophylactic valaciclovir (lower dose) vs Prophylactic valaciclovir (higher dose)

Adverse effects · Patients being treated for cancer (acute leukaemia; chemotherapy or stem-cell transplantation)
1 finding from 1 review

STANDARD LOWER DOSE (> 3 to 7.5 mg/day) vs OTHER DOSES

Leaving the study early (2‐10 weeks) vs. standard higher dose (> 7.5‐15 mg/day) · people with the acute phase of schizophrenia

It is very uncertain whether STANDARD LOWER DOSE (> 3 to 7.5 mg/day) changes leaving the study early (2‐10 weeks) vs. standard higher dose (>… compared with OTHER DOSES (very low certainty).

1 finding from 1 review

STANDARD LOWER DOSE (> 3 to 7.5 mg/day) vs OTHER DOSES

Global state: No clinically significant response (as defined by the original studies) · people with the acute phase of schizophrenia

It is very uncertain whether STANDARD LOWER DOSE (> 3 to 7.5 mg/day) changes global state: 1. No clinically significant response in global state… compared with OTHER DOSES (very low certainty).

1 finding from 1 review

STANDARD LOWER DOSE (> 3 to 7.5 mg/day) vs OTHER DOSES

Global state: 1. No clinically significant response in global state (2‐10 weeks) vs. high dose (> 15‐35 mg/day) · people with the acute phase of schizophrenia

It is very uncertain whether STANDARD LOWER DOSE (> 3 to 7.5 mg/day) changes global state: 1. No clinically significant response in global state… compared with OTHER DOSES (very low certainty).

1 finding from 1 review

STANDARD LOWER DOSE (> 3 to 7.5 mg/day) vs OTHER DOSES

Adverse effects: 1. Clinically significant extrapyramidal side effects (2‐10 weeks) vs. standard higher dose (> 7.5‐15 mg/day) · people with the acute phase of schizophrenia

It is very uncertain whether STANDARD LOWER DOSE (> 3 to 7.5 mg/day) changes adverse effects: 1. Clinically significant extrapyramidal side… compared with OTHER DOSES (very low certainty).

1 finding from 1 review

STANDARD LOWER DOSE (> 3 to 7.5 mg/day) vs OTHER DOSES

Adverse effects: 1. Clinically significant extrapyramidal side effects (2‐10 weeks) vs. high dose (> 15‐35 mg/day) · people with the acute phase of schizophrenia

It is very uncertain whether STANDARD LOWER DOSE (> 3 to 7.5 mg/day) changes adverse effects: 1. Clinically significant extrapyramidal side… compared with OTHER DOSES (very low certainty).

1 finding from 1 review