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. 2023 Mar 31;9:e45697. doi: 10.2196/45697

Table 1.

Individual characteristics among complete cases without missing data in 2019 and 2021.

Variables 2019 (n=272,543), n (%) 2021 (n=278,064), n (%)
Sociodemographic

Sex


Male 129,986 (47.7) 135,745 (48.8)


Female 142,557 (52.3) 142,319 (51.2)

Age range (years)


18-24 13,910 (5.1) 11,020 (4)


25-34 28,659 (10.5) 28,729 (10.3)


35-44 34,174 (12.5) 39,392 (14.2)


45-54 41,268 (15.1) 44,794 (16.1)


55-64 58,183(21.4) 56,628 (20.3)


65 and older 96,349 (35.4) 97,501 (35.1)

Residential area


Urban 230,874 (84.7) 237,673 (85.5)


Rural 41,669 (15.3) 40,391 (14.5)

Education level


Attended high school or less 14,805 (5.4) 13,065 (4.7)


Graduated from high school 67,247 (24.7) 65,609 (23.6)


Attended college or above 77,622 (28.5) 77,630 (27.9)


Graduated from college or above 112,869 (41.4) 121,760 (43.8)

Marital status


Single 52,796 (19.4) 54,306 (19.5)


Married 146,251 (53.7) 152,435 (54.8)


Divorced, widowed, or others 73,496 (27) 71,323 (25.6)

Employment


Employed 145,075 (53.3) 152,050 (54.7)


Unemployed 27,083 (9.9) 26,550 (9.5)


Retired or unable to work 100,385 (36.8) 99,464 (35.8)

Household income (US $)


Less than 15,000 22,051 (8.1) 15,772 (5.6)


15,000 to <25,000 39,395 (14.5) 26,772 (9.6)


25,000 to <35,000 26,803 (9.8) 33,851 (12.2)


35,000 to <50,000 37,991 (13.9) 38,514 (13.9)


50,000 or more 146,303 (53.7) 163,155 (58.7)

Housing


Own 199,188 (73.1) 206,029 (74.1)


Rent 62,790 (23) 62,854 (22.6)


Other arrangement 10,565 (3.9) 9181 (3.3)

Health insurance


Yes 252,202 (92.5) 264,984 (95.3)


No 20,341 (7.5) 13,080 (4.7)
Health and related behaviors

Perceived health


Excellent 44,293 (16.3) 49,072 (17.6)


Very good 94,103 (34.5) 98,468 (35.4)


Good 84,798 (31.1) 86,112 (31)


Fair 36,038 (13.2) 33,517 (12.1)


Poor 13,311 (4.9) 10,895 (3.9)

Chronic health condition


Hypertension 110,699 (40.6) 165,449 (59.5)


High cholesterol 95,634 (35.1) 152,806 (55)


Diabetes 37,048 (13.6) 37,910 (13.6)


Asthma 25,755 (9.4) 27,300 (9.8)


COPDa 22,545 (8.3) 22,261 (8)


Depression 53,900 (19.8) 57,284 (20.6)

Report of comorbidities


None 91,235 (33.5) 29,563 (10.6)


2 and more 101,630 (37.3) 159,570 (57.4)

Health behaviors


Maintaining optimal body weight 83,875 (30.8) 80,754 (29)


Performing physical activity 204,733 (75.1) 214,943 (77.3)


Healthy diet 44,028 (16.2) 40,444 (14.5)

Risk behaviors


Current smoker 38,662 (14.2) 36,983 (13.3)


Excessive alcohol user 44,171 (16.2) 44,798 (16.1)

Practicing healthy lifestyles


Yes 10,955 (4) 10,139 (3.6)


No 261,590 (96) 267,925 (96.4)

aCOPD: chronic obstructive pulmonary disease.