Table 1 Summary statistics and description of independent variables before and after coarsened exact matching
Variables | Description of variables | Â | Before matching | Â | After matching | ||||
|---|---|---|---|---|---|---|---|---|---|
Obs. | Employed | Unemployed | p-value | Obs. | Employed | Unemployed | p-value | ||
N | Â | 10,622 | 10,337 | 285 | Â | 7857 | 7574 | 283 | Â |
Gender | Â | 10,622 | Â | Â | Â | 7857 | Â | Â | Â |
 Malea |  |  | 5472 (52.94) | 134 (47.02) | 0.048 |  | 3563 (47.35) | 134 (47.35) | 1.000 |
 Female | Female = 1, male = 0 |  | 4865 (47.06) | 151 (52.98) |  |  | 3961 (52.65) | 149 (52.65) |  |
Age (years) | Â | 10,622 | Â | Â | Â | 7857 | Â | Â | Â |
 15–29a |  |  | 2055 (19.27) | 27 (9.47) | < 0.001 |  | 718 (9.54) | 27 (9.54) | 1.000 |
 30–44 | 30–44 = 1, other = 0 |  | 3974 (38.44) | 102 (35.79) |  |  | 2712 (36.04) | 102 (36.04) |  |
 > 45 | > 45 = 1, other = 0 |  | 4308 (41.68) | 156 (54.74) |  |  | 4094 (54.42) | 154 (54.42) |  |
Marital status | Â | 10,622 | Â | Â | Â | 7857 | Â | Â | Â |
 Single a |  |  | 1065 (10.30) | 15 (5.26) | < 0.001 |  | 399 (5.30) | 15 (5.30) | 1.000 |
 Marriage | Marriage = 1, other = 0 |  | 8984 (86.91) | 247 (86.67) |  |  | 6567 (87.28) | 247 (87.28) |  |
 Widowed and divorced | Widowed and divorced = 1, other = 0 |  | 288 (2.79) | 23 (8.07) |  |  | 558 (7.42) | 21 (7.42) |  |
Education status | Â | 10,622 | Â | Â | Â | 7857 | Â | Â | Â |
 Elementary school and below a |  |  | 2028 (19.62) | 20 (7.02) | < 0.001 |  | 532 (7.07) | 20 (7.07) | 1.000 |
 Middle school | Middle school = 1, other = 0 |  | 4600 (44.50) | 116 (40.70) |  |  | 3084 (40.99) | 116 (40.99) |  |
 Senior high school | Senior high school = 1, other = 0 |  | 2143 (20.73) | 126 (44.21) |  |  | 3323 (44.17) | 125 (44.17) |  |
 College degree and above | College degree and above = 1, other = 0 |  | 1566 (15.15) | 23 (8.07) |  |  | 585 (7.77) | 22 (7.77) |  |
Health insurance | Â | 10,622 | Â | Â | Â | 7857 | Â | Â | Â |
 No a |  |  | 227 (2.20) | 11 (3.86) | < 0.001 |  | 143 (1.89) | 11 (3.89) | < 0.001 |
 Basic medical insurance | Basic medical insurance = 1, other = 0 |  | 7382 (71.43) | 158 (55.44) |  |  | 5504 (72.67) | 158 (55.83) |  |
 Commercial insurance and other insurance | Commercial insurance and other insurance = 1, other = 0 |  | 2726 (26.38) | 116 (40.70) |  |  | 1927 (25.44) | 114 (40.28) |  |
Smoking status b | Â | 10,610 | Â | Â | Â | 7848 | Â | Â | Â |
 No smoking a |  |  | 6801 (65.86) | 189 (66.78) | 0.262 |  | 5030 (65.68) | 187 (66.55) | 0.286 |
 Non-daily smoking | Non-daily smoking = 1, other = 0 |  | 464 (4.49) | 7 (2.47) |  |  | 330 (4.28) | 7 (2.49) |  |
 Daily smoking | Daily smoking = 1, other = 0 |  | 3062 (29.65) | 87 (30.74) |  |  | 2207 (30.04) | 87 (30.96) |  |
Drinking alcohol b | Â | 10,444 | Â | Â | Â | 7717 | Â | Â | Â |
 No a |  |  | 7659 (75.35) | 213 (76.34) | 0.703 |  | 5718 (76.85) | 211 (76.17) | 0.792 |
 Yes | Yes = 1, No = 0 |  | 2506 (24.65) | 66 (23.66) |  |  | 1722 (23.15) | 66 (23.83) |  |
Economic status (Yuan) b | Â | 10,322 | Â | Â | Â | 7857 | Â | Â | Â |
 Lowest group a |  |  | 2047 (19.83) | 74 (25.96) | < 0.001 |  | 1954 (25.80) | 73 (25.80) | 0.998 |
 Lower group | Lower group = 1, other = 0 |  | 2064 (20.00) | 58 (20.35) |  |  | 1526 (20.14) | 57 (20.14) |  |
 Medium group | Medium group = 1, other = 0 |  | 2056 (19.92) | 65 (22.81) |  |  | 1740(22.97) | 65 (22.97) |  |
 Higher group | Higher group = 1, other = 0 |  | 2074 (20.09) | 48 (16.84) |  |  | 1284 (16.96) | 48 (16.96) |  |
 Highest group | Highest group = 1, other = 0 |  | 2081 (20.16) | 40 (14.04) |  |  | 1070 (14.13) | 40 (14.13) |  |