Table 3 Definitions of the outcome variables and major explanatory variables in multivariate analysis
Variable | Definition of the variable |
|---|---|
Outcome variable | |
The type of major health care facility used for prenatal care | 1 = obstetrics in medical centres or regional hospitals; 2 = obstetrics in local hospitals; 3 = obstetric clinics, health stations, midwives or others. |
The convenience of transportation to and from prenatal care facilities | 1 = inconvenient (very inconvenient or somewhat inconvenient); 2 = moderate; 3 = convenient; 4 = very convenient. |
Major explanatory variables | |
Rural | = 1 if a mother lived in a rural area during pregnancy, and 0 otherwise. |
1993_1995 | = 1 if a pregnancy was during January 1, 1993 and February 28, 1995, and 0 otherwise. |
1996_1997 | = 1 if a pregnancy was during January 1, 1996 and December 31, 1997, and 0 otherwise. |
1998_1999 | = 1 if a pregnancy was during January 1, 1998 and December 31, 1999, and 0 otherwise. |
Rural*1993_1995 | The interaction term of "Rural" and "1993_1995" |
Rural*1996_1997 | The interaction term of "Rural" and "1996_1997" |
Rural*1998_1999 | The interaction term of "Rural" and "1998_1999" |