Childhood infections, but not early life growth, influence hearing in the Newcastle thousand families birth cohort at age 14 years

Table 1 Descriptive statistics by sex for all categorical variables

Variable		Male (n)	Female (n)	Total (n)
Sex		83	64	147
Social class at birth	I,II	13	1	14
	III	43	36	79
	IV,V	27	27	54
Housing conditions at birth	0	28	24	52
	1	18	19	37
	2 or more	37	21	58
Duration breast fed	< 4 weeks	21	16	37
	4 wks-6 mts	40	29	69
	> 6 months	22	19	41
Measles 0 to 13 years	No	11	9	20
Measles 0 to 13 years	Yes	72	55	127
Mumps 0 to 13 years	No	59	39	98
Mumps 0 to 13 years	Yes	24	25	49
Whooping cough 0 to 13 years	No	25	21	46
Whooping cough 0 to 13 years	Yes	58	43	101
Tuberculosis 0 to 13 years	No	75	55	130
Tuberculosis 0 to 13 years	Yes	8	9	17
Scarlet fever 0 to 13 years	No	78	58	136
Scarlet fever 0 to 13 years	Yes	5	6	11
Chicken Pox 0 to 13 years	No	29	21	50
Chicken Pox 0 to 13 years	Yes	54	43	97
Rubella 0 to 13 years	No	57	45	102
Rubella 0 to 13 years	Yes	26	19	45
Overcrowding in first year	No	45	36	81
Overcrowding in first year	Yes	38	28	66
Tonsillitis in first year	No	80	63	143
Tonsillitis in first year	Yes	3	1	4
Bronchitis in first year	No	62	47	109
Bronchitis in first year	Yes	21	17	38
Pneumonia in first year	No	78	59	137
	Yes	5	5	10

ISSN: 1472-6815