Clinical Study

The Effect of Low-Level Laser Therapy on Hearing

Table 1

Group characteristics.

GroupN F/MAgePTA

Treatment90.4452.3 (14.6)37.4 (15.9)
Placebo100.3058.9 (7.4)41.4 (10.3)
Control110.4547.1 (16.7)39.8 (18.6)

Total300.4052.8 (12.9)39.6 (15.3)

N: number of subjects in group. F/M: female to male ratio. Age: mean age in years. PTA: mean audiometric pure tone average (0.5, 1, and 2 kHz) in dB HL. Numbers in parentheses are standard deviations.