Table 3.

Results of post hoc analyses (Tukey tests) indicating the ages (in weeks) at which infant ER pressure differences (ER at a given static ear-canal pressure minus ER at TPP) were significantly different from each other (α=0.05). A blank space indicates the lack of a statistically significant difference between any of the infant groups.

Frequency(Hz)	Static-ear-canal pressure (daPa) relative to tympanometric peak pressure (TPP)
	−200	−100	−50	−25	25	50	100	200
250	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24			4–24	4–24 12–24
315	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24			4–24 12–24	4–12 12–24
397	4–12	4–12						12–24
500							4–12	4–12
630					12–24		4–24	4–12 4–24
794								4–24
1000
1260
1587	4–12					4–12
2000	4–24				4–12	4–12 4–24	4–12 4–24	4–12 4–24
2520	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24	4–12	4–12 4–24	4–12 4–24
3175	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24
4000	4–12	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24
5040	4–12	4–12	4–12	4–12	4–12 4–24	4–12 4–24	4–12 4–24	4–12 4–24
6350	4–12	4–12 12–24	4–12 12–24	12–24	12–24			4–24
8000							4–24	4–12 4–24