Table 1 Evaluating indicators of different algorithms on regression tasks.

From: Nonlinear associations between the ratio of family income to poverty and all-cause mortality among adults in NHANES study

Characteristics

Total

Low income

Middle income

High income

P-value

N = 6058

(PIR < 1, N = 931)

(PIR 1–4, N = 3337)

(PIR ⩾ 4, N = 1790)

Age (years)

  < 65

4023 (66.4%)

625 (67.1%)

1992 (59.7%)

1406 (78.5%)

 < 0.001

⩾ 65

2035 (33.6%)

306 (32.9%)

1345 (40.3%)

384 (21.5%)

 

Gender, n (%)

 Male

3057 (50.5%)

435 (46.7%)

1665 (49.9%)

957 (53.5%)

0.002

 Female

3001 (49.5%)

496 (53.3%)

1672 (50.1%)

833 (46.5%)

 

Race/Ethnicity,n (%)

 Mexican American

970 (16.0%)

255 (27.4%)

562 (16.8%)

153 (8.5%)

 < 0.001

 Non-hispanic (Black, White)

4442 (73.3%)

540 (58.0%)

2411 (72.3%)

1491 (83.3%)

 

 Others

646 (10.7%)

136 (14.6%)

364 (10.9%)

146 (8.2%)

 

Marital Status,n (%)

 Married or living with a partner

3860 (63.8%)

424 (45.7%)

2058 (61.7%)

1378 (77.0%)

 < 0.001

 Widowed, Divorced, or

1744 (28.8%)

381 (41.1%)

1042 (31.2%)

321 (17.9%)

 

Separated

 Never married

449 (7.4%)

123 (13.3%)

236 (7.1%)

90 (5.0%)

 

 Education level, n (%)

 < High school

1850 (30.6%)

557 (60.0%)

1145 (34.3%)

148 (8.3%)

 < 0.001

 High school

1450 (24.0%)

172 (18.5%)

944 (28.3%)

334 (18.7%)

 

 Some college or more

2754 (45.5%)

200 (21.5%)

1246 (37.4%)

1308 (73.1%)

 

Somking status, n (%)

    

 < 0.001

 Never

2866 (47.3%)

378 (40.8%)

1553 (46.6%)

935 (52.2%)

 

 Ever

1890 (31.2%)

222 (23.9%)

1060 (31.8%)

608 (34.0%)

 

 Current

1297 (21.4%)

327 (35.3%)

723 (21.7%)

247 (13.8%)

 

Alcohol consumption,n (%)

    

 < 0.001

 Never drinkers

1111 (20.4%)

200 (24.4%)

660 (22.0%)

251 (15.4%)

 

 Ex-drinkers

1415 (25.9%)

289 (35.2%)

878 (29.3%)

248 (15.2%)

 

 Low-to-moderate drinkers

2916 (53.5%)

327 (39.8%)

1454 (48.5%)

1135 (69.5%)

 

 Heavy drinkers

12 (0.2%)

5 (0.6%)

7 (0.2%)

0 (0.0%)

 

Physical activity, n (%)

    

 < 0.001

 Inactive

1059 (22.9%)

189 (31.4%)

643 (25.7%)

227 (14.8%)

 

 Moderate

1966 (42.5%)

250 (41.6%)

1081 (43.3%)

635 (41.5%)

 

 Vigorous

1604 (34.7%)

162 (27.0%)

775 (31.0%)

667 (43.6%)

 

 BMI (kg/m2)

29.4 ± 6.6

29.4 ± 7.7

29.5 ± 6.6

29.2 ± 6.0

0.528

 Sleep quality, n (%)

    

0.168

Good sleep quality

2123 (35.4%)

302 (32.9%)

1197 (36.2%)

624 (35.1%)

 

Poor sleep quality

3880 (64.6%)

617 (67.1%)

2110 (63.8%)

1153 (64.9%)

 

Health insurance, n (%)

    

 < 0.001

Yes

5041 (83.3%)

613 (66.0%)

2717 (81.5%)

1711 (95.6%)

 

No

1011 (16.7%)

316 (34.0%)

616 (18.5%)

79 (4.4%)

 

Diabetes, n (%)

    

 < 0.001

Yes

1209 (21.2%)

252 (28.8%)

727 (23.3%)

230 (13.5%)

 

No

4488 (78.8%)

624 (71.2%)

2395 (76.7%)

1469 (86.5%)

 

Hypertension

    

 < 0.001

Yes

2731 (45.1%)

429 (46.2%)

1583 (47.5%)

719 (40.2%)

 

No

3318 (54.9%)

499 (53.8%)

1748 (52.5%)

1071 (59.8%)

 

Hypercholesterolemia

    

 < 0.001

Yes

4967 (84.0%)

626 (69.7%)

2704 (83.1%)

1637 (92.9%)

 

No

948 (16.0%)

272 (30.3%)

550 (16.9%)

126 (7.1%)

 

Cardiovascular disease

    

 < 0.001

Yes

726 (12.0%)

144 (15.5%)

462 (13.9%)

120 (6.7%)

 

No

5330 (88.0%)

787 (84.5%)

2873 (86.1%)

1670 (93.3%)

 

self-reported other diseases

    

0.001

Yes

4650 (76.8%)

739 (79.4%)

2590 (77.6%)

1321 (73.8%)

 

No

1408 (23.2%)

192 (20.6%)

747 (22.4%)

469 (26.2%)

 
  1. Data were expressed as mean ± standard deviation (SD) for for normally distributed continuous variables, and one-way ANOVAs were applied for multiple comparison. Categorical variables are reported in frequency and percentage and are compared with the use of the chi-square test. Slef-reported other diseases included respiratory disease, arthritis, gout, thyroid disease, digestive system disease, and cancer.
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