Table 2 Univariate and multivariate-tested associations between change to IUD free of charge and the history of abortion and socio-demographics

Age group (years)

1.028

0.660; 1.128

0.925

1.042

0.967; 1.093

0.375

Relationship status: lived with partner

1.156

0.712; 1.878

0.556

1.388

0.808; 2.381

0.235

Education (years of schooling)

0.574

0.699

  < 10

Ref.

Ref.

 10

1.102

0.680; 1.786

1.074

0.634; 1.819

  > 10

1.878

0.545; 6.131

1.769

0.472; 6.622

Region of residence

0.062

 Urban

Ref.

Ref.

 Rural

1.361

0.850; 2.180

0.198

1.640

0.975; 2.760

Receipt of unemployment benefits (months)

0.134

0.124

  < 12

Ref.

Ref.

 12–36

1.844

0.754; 4.510

2.042

0.766; 5.44

  > 36

1.111

0.478; 2.583

1.163

0.446; 3.032

Number of induced abortion(s) in the past

0.001

0.003

 0

Ref.

Ref.

 1

3.430

1.743; 6.753

3.307

1.602; 6.827

  > 1

1.663

0.935; 2.954

1.694

0.918; 3.121

Exclusive use of less effective contraceptives^a

3.281

1.717; 6.273

<  0.001

3.062

1.532; 6.119

0.002