Table 3. Audiological findings

Test	Age at test, months, median (range)	Result	No. (%)
Otoscopy (n=32)	2.0 (0.7–29.1)	Both tympanic membranes intact	27 (84.4)
		Middle-ear effusion suspected	4 (12.5)
		Not fully visualized	1 (3.1)
Initial OAE (n=32)	1.9 (0.0–29.1)	Pass in both ears	21 (65.6)
		Non-pass	11 (34.4)
Tympanometry (n=20)	2.7 (0.0–29.1)	Normal (type A)	11 (55.0)
		Abnormal (type B or As)	4 (20.0)
		Not obtainable	5 (25.0)
Follow-up OAE (n=14)	47.9 (3.6–94.1)	Pass	13 (92.9)
		Non-pass	1 (7.1)
ABR (n=16)	4.1 (1.9–18.4)	Normal (≤20 dB nHL in both ears)	16 (100)
PTA (n=5)	80.3 (54.5–94.1)	Normal	5 (100)
Final hearing status (n=32)	-	Normal, confirmed by PTA	5 (15.6)
		Normal, confirmed by ABR	14 (43.8)
		Bilateral OAE pass only, not confirmed by ABR or PTA	12 (37.5)
		OAE only, unilateral non-pass on the most recent test	1 (3.1)
		Permanent hearing loss identified	0 (0)

Percentages are calculated within each test. All 11 children with a non-pass initial OAE subsequently normalized, confirmed by ABR or PTA in 10 and by follow-up OAE in 1.
Hearing was regarded as confirmed only when ABR or PTA was performed; a bilateral OAE pass does not exclude slight or mild hearing loss or auditory neuropathy.
OAE: otoacoustic emissions, ABR: auditory brainstem response, PTA: pure-tone audiometry.