Table 1.

Sociodemographic characteristics of young breast cancer patients (N = 144) and their associations with disease progression (HR hazard ratio, CI confidence interval)

Parameters	N	%	HR (95%CI)
Age at diagnosis
Median	37
< 35	57	39.60%	0.937 (0.376–2.273)
≥ 35	87	60.40%	ref
Ethnicity
Javanese	130	90.30%	1.581 (0.387–6.462)
Banjar	4	2.80%	ref
Sundanese	3	2.10%	ref
Dayak	3	2.10%	ref
Chinese	2	1.40%	ref
Others	2	1.40%	ref
Residence
Rural	124	86.10%	1.021 (0.365–2.861)
Urban	20	13.90%	ref
Education
Less than high school	34	23.60%	0.836 (0.334–2.092)
High school	80	55.60%	ref
Higher education	30	20.80%	ref
Marital status
Married	140	97.20%	1.985 (0.2–19.689)
Not married	4	2.80%	ref
Physical activity
Vigorously active	17	11.80%	ref
Moderately active	22	15.30%	0.230 (0.086–0.615)
Lightly active	105	72.90%	ref
Tobacco smoking
Never	139	96.50%	1.985 (0.2–19.689)
Ever	3	2.10%	ref
Former	2	1.40%	ref