Table 3. False referral rates as a function of baseline age for several f2 frequencies.

False referral rates obtained by subjecting the observed test-retest differences to pass-fail criteria based on the 90% shift reference intervals derived from a meta-analysis of 10 studies in adults (Reavis et al. 2015). Results suggest that shift reference intervals need to be developed specifically for use with children and/or long test-retest intervals.

		Baseline Age
		<1yr	1–3yrs	3–5yrs	5+yrs
f2 Primary (Hz)
2063	%	29%	16%	50%	18%
	N	17	19	12	17
4219	%	18%	18%	0%	5%
	N	17	22	13	19
6000	%	35%	5%	8%	26%
	N	17	22	13	19