Table 3.

Summary for mean differences and standardized mean differences. AHI = apnea-hypopnea index, AI = apnea index, CI = confidence interval, LSAT = lowest oxygen saturation, MD = mean difference, SI = snoring index, and SMD = standardized mean difference.

Control and nasal dilator
Treatment Data
Random effects modeling MD	MD [95% CI]	Overall effect z	p value
AHI	0.36 [−2.05, 2.77]	0.3	0.77
AI	−0.01 [−2.01, 1.99]	0.01	0.99
LSAT	0.94% [−0.21, 2.09]	0.30	0.77
SI	−2.50 [−10.7, 5.71]	0.60	0.55
Random effects modeling SMD	SMD [95% CI]	Cohen's magnitude of effect
AHI	0.11 [−0.38, 0.60]	Small
AI	−0.06 [−0.28, 0.15]	Small
LSAT	0.11 [−0.38, 0.60]	Small
SI	−0.25 [−0.52, 0.01]	Small