Table 1.
Characteristics of participants with and without SMI NHANES (n = 53,348), 1999–2016.
| Characteristic | Total | Without SMI | With SMI | p-Value |
|---|---|---|---|---|
| n | 53,348 | 52,630 | 718 | |
| Age in years, mean (SD) | 47.5 (19.6) | 47.4 (19.6) | 51.1 (16.8) | <0.001 |
| Men | 25,709 (48.2) | 25,378 (48.2) | 331 (46.1) | 0.275 |
| Ethnicity, white | 23,388 (43.8) | 23,013 (43.7) | 375 (52.2) | <0.001 |
| Education, college or above | 23,974 (48.5) | 23,691 (48.6) | 283 (41.3) | <0.001 |
| Marital status, not married | 25,418 (49.6) | 24,923 (49.3) | 495 (70.6) | <0.001 |
| Ratio of family income to poverty, mean (SD) | 2.5 (1.6) | 2.5 (1.6) | 1.8 (1.4) | <0.001 |
| BMI (kg/m2), mean (SD) | 28.6 (6.8) | 28.6 (6.7) | 30.5 (7.6) | <0.001 |
| Waist circumference a | <0.001 | |||
| Low | 13,215 (27.5) | 13,112 (27.7) | 103 (17.3) | |
| High | 9291 (19.4) | 9204 (19.4) | 87 (14.6) | |
| Very high | 25,473 (53.1) | 25,066 (52.9) | 407 (68.2) | |
| Had at least 12 alcohol drink in one year | 30,261 (69.4) | 29,865 (69.4) | 396 (67.9) | 0.454 |
| Smoking status | <0.001 | |||
| Non-smoker | 30,575 (57.3) | 30,305 (57.6) | 270 (37.6) | |
| Ex-smoker | 12,278 (23.0) | 12,105 (23.0) | 173 (24.1) | |
| Current smoker | 10,495 (19.7) | 10,220 (19.4) | 275 (38.3) | |
| Cig number in past 30 days, mean (SD) | 12.6 (10.6) | 12.5 (10.5) | 16.4 (12.8) | <0.001 |
| Substance Misuse (cocain/herion) | 5766 (17.6) | 5602 (17.4) | 164 (35.7) | <0.001 |
| Had moderate Physical activity over past 30 days | 22,558 (43.0) | 22,353 (43.2) | 205 (30.1) | <0.001 |
| Sugar intake (g), mean (SD) | 115.0 (69.7) | 114.7 (69.4) | 137.6 (87.1) | <0.001 |
| Carbohydrate intake (g), mean (SD) | 255.1 (115.5) | 254.9 (115.4) | 273.8 (124.1) | <0.001 |
| Energy intake (KCAL), mean (SD) | 2060.7 (883.4) | 2059.8 (883.2) | 2132.0 (890.4) | 0.060 |
| Diabetes | 5821 (11.1) | 5695 (11.0) | 126 (18.2) | <0.001 |
| Cardiovascular disease b | 4869 (9.1) | 4749 (9.0) | 120 (16.7) | <0.001 |
Note: Data are presented as frequency (%) unless specified. Numbers may not sum to totals due to missing values; percentages may not sum to 100 due to rounding. SD, standard deviation; BMI, body mass index; KCAL, kilocalories. a Waist circumference is defined as low (men ≤ 94 cm, women ≤ 80 cm), high (men 94–102 cm, women 80–88 cm), very high (men > 102 cm, women > 88 cm). b cardiovascular disease is defined as having at least one of the congestive heart failure, coronary heart disease, angina, heart attack, and stroke p-value was obtained from comparing characteristics between people with and without SMI using appropriate statistical tests (t test/Mann–Whitney U test for continuous data and Chi-squared/Fisher’s exact test for categorical data).