Table 1.
Respondent characteristics
| Characteristics | Chinese general populationa (%) | Total sample (N = 3320) N (%) | Difference (%) |
|---|---|---|---|
| Sexb | |||
| Male | 51.2 | 1670 (50.3) | − 0.9 |
| Female | 48.8 | 1650 (49.7) | +0.9 |
| Age (mean ± SD) | NA | 44.6 ± 16.1 | – |
| Age group (years)b | |||
| 18–29 | 21.5 | 708 (21.3) | − 0.2 |
| 30–39 | 18.7 | 613 (18.5) | − 0.2 |
| 40–49 | 21.1 | 670 (20.2) | − 0.9 |
| 50–59 | 17.1 | 614 (18.5) | + 1.4 |
| ≥ 60 | 21.6 | 715 (21.5) | − 0.1 |
| Educationb | |||
| Primary or lower | 26.2 | 820 (24.7) | − 1.5 |
| Junior high school | 40.3 | 1288 (38.8) | − 1.5 |
| Senior high school | 17.2 | 601 (18.1) | + 0.9 |
| College or higher | 16.3 | 611 (18.4) | + 2.1 |
| Regionb | |||
| Urban | 59.6 | 1980 (59.6) | − 0.05 |
| Rural | 40.4 | 1340 (40.4) | + 0.05 |
| Marital status | |||
| Unmarried | NA | 709 (21.4) | – |
| Married | NA | 2434 (73.3) | – |
| Divorced | NA | 73 (2.2) | – |
| Widowed | NA | 104 (3.1) | – |
| Health insurance | |||
| Urban employee | NA | 1576 (47.5) | – |
| Urban and rural resident | NA | 1476 (44.5) | – |
| Commercial | NA | 449 (13.5) | – |
| Other | NA | 74 (2.2) | – |
| No | NA | 188 (5.7) | – |
| Employment status | |||
| Employed | NA | 2043 (61.5) | – |
| Retired | NA | 604 (18.2) | – |
| Student | NA | 229 (6.9) | – |
| Unemployed | NA | 444 (13.4) | – |
| Monthly income (RMB) | |||
| < 2000 | NA | 858 (25.8) | – |
| 2000–5000 | NA | 1831 (55.2) | – |
| 5000–10,000 | NA | 481 (14.5) | – |
| > 10,000 | NA | 150 (4.5) | – |
| Number of chronic conditionsc | |||
| 0 | NA | 2063 (62.1) | – |
| 1 | NA | 831 (25.0) | – |
| 2 | NA | 265 (8.0) | – |
| 3 | NA | 93 (2.8) | – |
| ≥ 4 | NA | 68 (2.0) | – |
NA data not included in the publicly available data source, RMB renminbi, SD standard deviation
aStatistics data for the Chinese general population were extracted from the Sixth National Census of China [39] and the China Statistical Yearbook [40]
bQuota sampling was used in this study; sex, age, education status, and region were predefined on the basis of their distribution in the Chinese general population
cChronic conditions include hypertension, dyslipidemia, diabetes or high blood sugar, cancer or malignant tumor, chronic lung disease, liver disease, heart disease, stroke, kidney disease, stomach or other digestive disease, emotional or psychiatric problems, memory-related disease, arthritis or rheumatism, asthma, or other respondent-reported chronic conditions