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Table 3 Matching test for main covariates

From: How do urban public health services affect rural migrant women's fertility intentions? A study based on the Mobile Population Dynamics Monitoring Survey in China

Variables

Average value

Variance

Standardized Mean Difference SMD

Standard deviation t-test p-value

Treatment group

Control group

Treatment group

Control group

Age

Before entropy equilibrium

34.4

34.92

54.32

57.04

-0.000095

0.0000

After entropy equilibrium

34.4

34.4

54.32

54.61

0

1

Education Level

Before entropy equilibrium

0.356

0.302

0.229

0.211

0.002333

0.0000

After entropy equilibrium

0.356

0.356

0.229

0.229

0

1

Political Identity

Before entropy equilibrium

0.025

0.022

0.025

0.021

0.001187

0.0928

After entropy equilibrium

0.025

0.025

0.025

0.025

0

1

Marital Status

Before entropy equilibrium

0.973

0.972

0.027

0.027

0.000366

0.9316

After entropy equilibrium

0.973

0.973

0.027

0.027

0

1

Employment Status

Before entropy equilibrium

0.728

0.745

0.198

0.189

-0.000849

0.0000

After entropy equilibrium

0.728

0.728

0.198

0.198

0

1

Whether to participate in town medical insurance

Before entropy equilibrium

0.242

0.216

0.184

0.169

0.001398

0.0000

After entropy equilibrium

0.242

0.242

0.184

0.184

0

1

Number of children

Before entropy equilibrium

1.494

1.51

0.513

0.532

-0.000309

0.0000

After entropy equilibrium

1.494

1.494

0.513

0.541

0

1

Nature of spouse's household registration

Before entropy equilibrium

0.847

0.882

0.129

0.104

-0.002684

0.0000

After entropy equilibrium

0.847

0.847

0.129

0.129

0

1

Family Ethnic Identity

Before entropy equilibrium

0.121

0.113

0.107

0.101

0.000740

0.0467

After entropy equilibrium

0.121

0.121

0.107

0.107

0

1

Family income level

Before entropy equilibrium

10.2

10.22

0.023

0.029

-0.008602

0.0000

After entropy equilibrium

10.2

10.2

0.023

0.102

0

1

Family housing burden

Before entropy equilibrium

0.209

0.219

0.045

0.041

-0.002198

0.0000

After entropy equilibrium

0.209

0.209

0.045

0.039

0

1

Mobility range

Before entropy equilibrium

0.441

0.554

0.247

-0.247

-0.004525

0.0000

After entropy equilibrium

0.441

0.441

0.247

0.247

0

1

Length of residence in the influx

Before entropy equilibrium

6.485

6.495

28.17

29.33

-0.000004

0.0000

After entropy equilibrium

6.485

6.485

28.17

29.15

0

1

  1. \(SMD=\left(\overline{{X }_{T}}-\overline{{X }_{C}} \right)/\sqrt{{S}_{T}^{2}\left({n}_{T}-1\right)+{S}_{C}^{2}\left({n}_{C}-1\right)/\left({n}_{T}+{n}_{C}-2\right)}\), where \(\overline{{X }_{T}}\) and \(\overline{{X }_{C}}\) denoted the means of each variable in the treatment and control groups, respectively, \({S}_{T}^{2}\) and \({S}_{C}^{2}\) denoted the variances of each variable in the treatment and control groups, respectively, and \({n}_{T}\) and \({n}_{C}\) denoted the sample size in the treatment and control groups, respectively