Channelled videolaryngoscopy probably leads to lower failed intubation compared with direct laryngoscopy (moderate certainty).
Channelled videolaryngoscopy probably leads to lower hypoxia compared with direct laryngoscopy (moderate certainty).
It is very uncertain whether channelled videolaryngoscopy changes successful first attempt compared with direct laryngoscopy (very low certainty).
Channelled videolaryngoscopy showed no clear difference in oesophageal intubation compared with direct laryngoscopy (low certainty).
It is very uncertain whether channelled videolaryngoscopy changes dental trauma compared with direct laryngoscopy (very low certainty).
Channelled videolaryngoscopy probably leads to lower cormack‐Lehane grade compared with direct laryngoscopy (moderate certainty).
Hyperangulated videolaryngoscopy showed no clear difference in successful first attempt compared with direct laryngoscopy (low certainty).
Hyperangulated videolaryngoscopy probably leads to lower oesophageal intubation compared with direct laryngoscopy (moderate certainty).
It is very uncertain whether hyperangulated videolaryngoscopy changes dental trauma compared with direct laryngoscopy (very low certainty).
Hyperangulated videolaryngoscopy probably leads to lower cormack‐Lehane grade compared with direct laryngoscopy (moderate certainty).
Hyperangulated videolaryngoscopy probably leads to lower failed intubation compared with direct laryngoscopy (moderate certainty).
Hyperangulated videolaryngoscopy showed no clear difference in hypoxaemia compared with direct laryngoscopy (low certainty).
Macintosh‐style videolaryngoscopy probably leads to lower failed intubation compared with direct laryngoscopy (moderate certainty).
Macintosh‐style videolaryngoscopy probably leads to lower hypoxaemia compared with direct laryngoscopy (moderate certainty).
Macintosh‐style videolaryngoscopy may leads to higher successful first attempt compared with direct laryngoscopy (low certainty).
Macintosh‐style videolaryngoscopy showed no clear difference in oesophageal intubation compared with direct laryngoscopy (low certainty).
It is very uncertain whether macintosh‐style videolaryngoscopy changes dental trauma compared with direct laryngoscopy (very low certainty).
Macintosh‐style videolaryngoscopy probably leads to lower cormack‐Lehane grade compared with direct laryngoscopy (moderate certainty).