Table 4.

Students' knowledge of risk factors for breast cancer

Risk Factors for Breast Cancer	True		False		Don't know
	N	%	N	%	N	%
Obesity (postmenopausal)	168	23.4	124	17.3	426	59.3
Family history of breast cancer	481	67.0	65	9.0	172	24.0
High fat diet	274	38.2	77	10.7	367	51.1
Early menarche (< 12 years)	59	8.2	172	24.0	487	67.8
Late menopause (> 55 years)	82	11.4	96	13.4	540	75.2
Tobacco smoke	456	63.5	57	8.0	205	28.5
Alcohol	416	57.9	55	7.7	247	34.4
Aging	164	22.8	179	24.9	375	52.3
Environmental pollution	280	39.0	104	14.5	334	46.5
Personal history of breast cancer	493	68.7	24	3.3	201	28.0
Late age at first full-term pregnancy (> 30 years)	149	20.8	140	19.5	429	59.7
Never breastfed a child	193	26.9	135	18.8	390	54.3
Recent oral contraceptive use	51	7.1	120	16.7	547	76.2
Recent and long-term use of hormone replacement therapy	148	20.6	42	5.8	528	73.6
High-dose radiation to chest	338	47.1	34	4.7	346	48.2
Deficiency of physical activity	311	43.3	85	11.9	322	44.8