Table 2 The L1 measure of imbalance between two groups before and after Coarsened Exact Matching
Variables | Before Matching | After Matching | ||
|---|---|---|---|---|
L1 (Mean) | L1 (SE) | L1 (Mean) | L1 (SE) | |
Sex | 0.0083 | 0.0083 | 2.6 × 10−15 | 2.9 × 10−15 |
Age group | 0.0833 | 0.1662 | 3.8 × 10− 15 | −7.1 × 10− 15 |
Chronic conditions | 0.0632 | 0.0632 | 2.2 × 10− 15 | 2.8 × 10− 15 |
Economic status | 0.1057 | −0.2737 | 2.7 × 10− 15 | −3.1 × 10− 15 |
Educational level | 0.1451 | −0.3527 | 3.2 × 10− 15 | −5.3 × 10− 15 |
Marital status | 0.0144 | 0.0247 | 3.7 × 10−16 | −4.4 × 10− 15 |
Employment status | 0.0256 | 0.0256 | 2.8 × 10−15 | 1.3 × 10− 15 |
Basic medical insurance | 0.1514 | 0.1514 | 7.9 × 10−16 | −2.4 × 10−15 |
Commercial insurance | 0.0023 | −0.0023 | 6.2 × 10−16 | 4.7 × 10−16 |
Minimum travel time to the nearest health-care facility | 0.0024 | −0.0024 | 1.2 × 10−16 | 1.1 × 10−15 |
Residential areas | 0.4242 | 3.3935 | 3.1 × 10−15 | 5.5 × 10−14 |
Multivariate L1 | 0.5648 |  | 3.6 × 10−15 |  |
Total, N | 6503 | Â | 4566 | Â |