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1991

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6a. How old was -- when -- began to have trouble hearing?

00[] At birth (7)
01[] Less than 1 year old (7)
Years old ____ (7)
98[] No trouble (7)
99[] DK (6c)

b. How old was -- when -- began to have serious trouble hearing or became deaf?

00[] At birth (7)
01[] Less than 1 year old (7)
Years old ____ (7)
98[] No trouble (7)
99[] DK (6c)

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1990

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3a. How old was -- when [he/she] began to have trouble hearing?

00[] At birth (4a)
01[] Less than 1 year old (4a)
Years old ____ (4a)
88[] No trouble (4a)
99[] DK (3c)

b. How old was -- when [he/she] began to have serious trouble hearing or became deaf?

00[] At birth (4a)
01[] Less than 1 year old (4a)
Years old ____ (4a)
88[] No trouble (4a)
99[] DK (3c)

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1971

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41 a. How old was -- when he began to have trouble hearing?

[] At birth
[] Less than 1 year
Years old ____
[] DK
[] No trouble

b. How old was -- when he began to have serious trouble hearing or became deaf?

[] At birth
[] Less than 1 year
Years old ____
[] DK
[] No trouble

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