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Table 1 Variable introduction and description statistics (N = 9701)

From: Early life adversity and health inequality: a dual interaction model

Variable

Measurement

Mean value

Standard deviation

Minimum value

Maximum value

Self-rated health

The answers of “not good” and “very bad” are assigned to 1, and the answers of “excellent”, “very good,” “good,” and “general” are assigned to 0

0.255

0.436

0

1

The types of early life adversities

 1 type

Experienced 1 type of adversity

0.315

0.465

0

1

 2 types

Experienced 2 types of adversity

0.162

0.369

0

1

 3 types

Experienced 3 types of adversity

0.072

0.259

0

1

 ≥ 4 types

Experienced 4 or more types of adversity

0.031

0.173

0

1

Duration of starvation in early life

 1 period

1 period of starvation

0.354

0.478

0

1

 2 periods

2 periods of starvation

0.161

0.368

0

1

 3 periods

3 periods of starvation

0.190

0.392

0

1

Gender

Male = 1, female = 0

0.477

0.500

0

1

Age

Choose age between 40-80

59.29

8.381

40

80

Marriage

Married = 1, not married = 0

0.893

0.309

0

1

Whether mother lived a long life

Mother’s age > =70s 1, < 70s 0

0.742

0.438

0

1

Father literacy

Literacy = 1, illiteracy = 0

0.460

0.498

0

1

Mother literacy

Literacy = 1, illiteracy = 0

0.136

0.343

0

1

Birthplace

Urban = 1, rural = 0

0.081

0.273

0

1

Father’s occupation

Manager or technician = 1, ordinary worker = 0

0.165

0.371

0

1

Number of siblings

Size of the original family; assign 12 people or more to 12

4.053

1.897

0

12

Serious illness in early life

Whether seriously sick for over 1 month before the age of 15

0.053

0.223

0

1

Self-rated early life heath

Poor self-rated health = 1, average, good = 0

0.048

0.214

0

1

Education

Years of education

5.549

4.163

0

19

Occupation

Non-agricultural employment = 1, farmer = 0

0.491

0.500

0

1

Attribute of residence

Rural assigned to 0, central village district assigned to 1, the special district assigned to 2, rural-town fringe zone assigned to 3, central town district assigned to 4, rural-urban fringe zone assigned to 5, and main urban zone assigned to 6

1.654

2.241

0

6

Relative economic status

Compared with the neighborhood, self-rated economic status

2.637

0.829

1

5

Disability

Whether respondent is disabled

0.237

0.425

0

1

Depressed mode

Using CED-10 depression self-rating scale

7.821

5.761

0

30