Variables

Users

n (%)

N = 818

Caregiver

n (%)

N = 182

OR (IC = 95%)

p value

Null parity as RF

Yes

No

308 (73.3)

510 (87.9)

112 (26.7)

70 (12.1)

2.65 (1.90 - 3.69)

Ref

<0.001

Oral contraceptive pills

Yes

No

482 (79.7)

336 (85.1)

123 (20.3)

59 (14.9)

1.3 (0.94 - 1.79)

Ref

0.031

Traumatism

Yes

No

423 (79.8)

395 (84.0)

107 (20.2)

75 (16.0)

1.45 (1.03 - 2.03)

Ref

1

0.083

Estrogen increases the risk of breast Kc

Yes

No

377 (78.8)

441 (85.1)

105 (21.8)

77 (14.9)

1.6 (1.16 - 2.21)

Ref

1

0.005

Lack of physical exercise

Yes

No

533 (78.8)

285 (88.0)

143 (21.2)

99 (12.0)

1.96 (1.34 - 2.86)

Ref

1

<0.001