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).
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).
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).
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).
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).
Highest showed no clear difference in cancer mortality risk No. of participants: 17,448 (1 RCT) compared with lowest selenium exposure (high certainty).
Highest showed no clear difference in colorectal cancer risk No. of participants: 19,009 (2 RCTs) compared with lowest selenium exposure (high certainty).
Highest showed no clear difference in non‐melanoma skin cancer risk No. of participants: 2027 (2 RCTs) compared with lowest selenium exposure (moderate certainty).
Highest showed no clear difference in lung cancer risk No. of participants: 19,009 (2 RCTs) compared with lowest selenium exposure (high certainty).
Highest showed no clear difference in breast cancer risk No. of participants: 802 (1 RCT) compared with lowest selenium exposure (moderate certainty).
Highest showed no clear difference in bladder cancer risk No. of participants: 19,009 (2 RCTs) compared with lowest selenium exposure (high certainty).
Highest showed no clear difference in prostate cancer risk No. of participants: 18,942 (4 RCTs) compared with lowest selenium exposure (high certainty).
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).
High feedback showed no clear difference in maternal anxiety ‐ throughout pregnancy compared with low feedback of routine prenatal ultrasound (low certainty).
High feedback may leads to higher cessation of alcohol compared with low feedback of routine prenatal ultrasound (low certainty).
High feedback may leads to higher cessation of smoking compared with low feedback of routine prenatal ultrasound (low certainty).
It is very uncertain whether high feedback changes women's views of level of feedback compared with low feedback of routine prenatal ultrasound (very low certainty).
Nasal high flow showed no clear difference in death (before hospital discharge) or BPD(supplemental… compared with continuous positive airway pressure (low certainty).
Nasal high flow showed no clear difference in BPD (supplemental oxygen/respiratory support at 36 weeks'… compared with nasal intermittent positive pressure ventilation (low certainty).
Nasal high flow showed no clear difference in treatment failure within 72 hours of trial entry compared with nasal intermittent positive pressure ventilation (moderate certainty).