Table 2.
The details of 1-N matching (N=158).
| Status | SMDa | Variance ratio | ||||
| Race | ||||||
|
|
White | |||||
|
|
|
Before matching | 0.1526 | 0.8896 | ||
|
|
|
After matching | 0.0188 | 0.9869 | ||
|
|
Black | |||||
|
|
|
Before matching | –0.0351 | 0.9065 | ||
|
|
|
After matching | –0.0385 | 0.8979 | ||
|
|
Other | |||||
|
|
|
Before matching | –0.1453 | 0.8317 | ||
|
|
|
After matching | 0.0060 | 1.0141 | ||
| Income | ||||||
|
|
<US $20,000 per year | |||||
|
|
|
Before matching | 0.4106 | 1.7267 | ||
|
|
|
After matching | –0.0178 | 0.9913 | ||
| Sex | ||||||
|
|
Male | |||||
|
|
|
Before matching | 0.1049 | 1.0108 | ||
|
|
|
After matching | 0.0069 | 1.0045 | ||
| Marital status | ||||||
|
|
Married | |||||
|
|
|
Before matching | –0.3400 | 0.7332 | ||
|
|
|
After matching | 0.0094 | 1.0180 | ||
|
|
Widowed | |||||
|
|
|
Before matching | –0.0866 | 0.4867 | ||
|
|
|
After matching | -0.0019 | 0.9863 | ||
|
|
Divorced or separated | |||||
|
|
|
Before matching | 0.3862 | 2.3224 | ||
|
|
|
After matching | 0.0324 | 1.0534 | ||
|
|
Never married | |||||
|
|
|
Before matching | 0.1467 | 1.0195 | ||
|
|
|
After matching | –0.0077 | 1.0053 | ||
| Working condition | ||||||
|
|
Working ≥35 hours per week | |||||
|
|
|
Before matching | –0.3279 | 0.7921 | ||
|
|
|
After matching | 0.0391 | 1.0520 | ||
|
|
Other groups of working condition | |||||
|
|
|
Before matching | –0.0608 | 0.8793 | ||
|
|
|
After matching | 0.0069 | 1.0212 | ||
| BMI | ||||||
|
|
Before matching | –0.0464 | 1.2435 | |||
|
|
After matching | 0.0169 | 1.0244 | |||
aSMD: standardized mean difference.