Comparison 4. Blue light versus white light—subgroup analysis of 5‐ALA versus HAL (post hoc).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
4.1 Time to disease recurrence	15	2994	Hazard Ratio (IV, Random, 95% CI)	0.66 [0.54, 0.81]
4.1.1 5‐ALA	6	1430	Hazard Ratio (IV, Random, 95% CI)	0.76 [0.57, 1.00]
4.1.2 HAL	9	1564	Hazard Ratio (IV, Random, 95% CI)	0.60 [0.45, 0.78]
4.2 Time to disease progression	9	2200	Hazard Ratio (IV, Random, 95% CI)	0.77 [0.63, 0.96]
4.2.1 5‐ALA	5	1239	Hazard Ratio (IV, Random, 95% CI)	0.72 [0.47, 1.11]
4.2.2 HAL	4	961	Hazard Ratio (IV, Random, 95% CI)	0.69 [0.48, 0.98]