Table 1

The score of each sociodemographic characteristic of the sampled participants

Sociodemographic variables

Score


1

2

3

4


Gender

Male

Female

Grade

One

Two

Three

Family income #

Low

(<1000)

Medium (1000–2499)

High

(≥ 2500)

Family structure

Single parent family

Nuclear family

Large family

Parents' relationship

Bad

Not bad

Good

Father's education level

Illiterate/primary

Middle school

High school

College and above

Mother's education level

Illiterate/primary

Middle school

High school

College and above


#Family income was expressed in RMB(yuan)/person/month

Li et al. BMC Public Health 2009 9:195   doi:10.1186/1471-2458-9-195

Open Data