Comparison 3. Direct and indirect voice training combined versus no intervention.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Voice Handicap Index	1	41	Mean Difference (IV, Fixed, 95% CI)	‐7.35 [‐15.07, 0.37]
2 Maximum phonation time	1	41	Mean Difference (IV, Fixed, 95% CI)	3.18 [1.93, 4.43]