Diarrhoea (grade 2+) · Women undergoing RT for gynecological cancer
Summary of findings: Selenium may leads to lower diarrhoea (grade 2+) compared with no intervention (low certainty).
1 finding from 1 review
QoL · Women undergoing RT for gynecological cancer
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Intervention not reported
ICU length of stay (selenium) · Patients with critical illnesses
It is very uncertain whether the intervention changes ICU length of stay (selenium) (very low certainty).
1 finding from 1 review
Intervention not reported
Days on ventilator (selenium) · Patients with critical illnesses
It is very uncertain whether the intervention changes days on ventilator (selenium) (very low certainty).
1 finding from 1 review
Intervention not reported
Length of hospital stay (selenium) · Patients with critical illnesses
It is very uncertain whether the intervention changes length of hospital stay (selenium) (very low certainty).
1 finding from 1 review
Incidence: lung cancer · healthy women, aged 35 to 60, and men, aged 45 to 60, living in France
Vitamins A, C, E + selenium + zinc showed no clear difference in incidence: lung cancer compared with placebo (high certainty).
1 finding from 1 review
Mortality: lung cancer · healthy women, aged 35 to 60, and men, aged 45 to 60, living in France
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Adverse events · healthy women, aged 35 to 60, and men, aged 45 to 60, living in France
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Incidence: all cancers · healthy women, aged 35 to 60, and men, aged 45 to 60, living in France
Vitamins A, C, E + selenium + zinc showed no clear difference in incidence: all cancers compared with placebo (high certainty).
1 finding from 1 review
Mortality: all cancers · healthy women, aged 35 to 60, and men, aged 45 to 60, living in France
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Mortality: all causes · healthy women, aged 35 to 60, and men, aged 45 to 60, living in France
Vitamins A, C, E + selenium + zinc showed no clear difference in mortality: all causes compared with placebo (high certainty).
1 finding from 1 review
Mortality: all cancers · Participants in non experimental cohort studies on selenium and cancer
It is very uncertain whether highest changes cancer mortality risk No. of participants: 183,863 (7 observational… compared with lowest selenium exposure (very low certainty).
1 finding from 1 review
Colorectal cancer risk (16 studies) · Participants in non experimental cohort studies on selenium and cancer
It is very uncertain whether highest changes colorectal cancer risk No. of participants: 712,746 (6 observational… compared with lowest selenium exposure (very low certainty).
1 finding from 1 review
Lung cancer risk (17 studies) · Participants in non experimental cohort studies on selenium and cancer
It is very uncertain whether highest changes lung cancer risk No. of participants: 371,067 (11 observational… compared with lowest selenium exposure (very low certainty).
1 finding from 1 review
Breast cancer risk (14 studies) · Participants in non experimental cohort studies on selenium and cancer
It is very uncertain whether highest changes breast cancer risk (women) No. of participants: 169,028 (8… compared with lowest selenium exposure (very low certainty).
1 finding from 1 review
Bladder cancer risk No. of participants: 279,100 (5 observational studies) · Participants in non experimental cohort studies on selenium and cancer
It is very uncertain whether highest changes bladder cancer risk No. of participants: 279,100 (5 observational… compared with lowest selenium exposure (very low certainty).
1 finding from 1 review
Prostate cancer risk (13 studies) · Participants in non experimental cohort studies on selenium and cancer
It is very uncertain whether highest changes prostate cancer risk No. of participants: 576,667 (21 observational… compared with lowest selenium exposure (very low certainty).
1 finding from 1 review
Any cancer risk No. of participants: 76,239 (7 observational studies) · Participants in non experimental cohort studies on selenium and cancer
It is very uncertain whether highest changes any cancer risk No. of participants: 76,239 (7 observational studies) compared with lowest selenium exposure (very low certainty).
1 finding from 1 review
Any cancer risk No. of participants: 19,475 (3 RCTs) · Participants in trials with low risk of bias
Highest showed no clear difference in any cancer risk No. of participants: 19,475 (3 RCTs) compared with lowest selenium exposure (high certainty).
1 finding from 1 review
Cancer mortality risk No. of participants: 17,448 (1 RCT) · Participants in trials with low risk of bias
Highest showed no clear difference in cancer mortality risk No. of participants: 17,448 (1 RCT) compared with lowest selenium exposure (high certainty).
1 finding from 1 review