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. 2020 Jul 4;17(13):4817. doi: 10.3390/ijerph17134817

Table 1.

Demographic characteristics of adults in the three age groups.

Total (n = 2345) Young Adults (n = 977) Middle-Aged Adults (n = 725) Older Adults (n = 643)
Age, mean (SD) 51.06 (17.01) 34.60 (6.17) 53.15 (5.34) 73.71 (5.94)
Gender
Male 754 (32.15) 317 (32.45) 182 (25.10) 255 (39.66)
Female 1591 (67.85) 660 (67.55) 543 (74.90) 388 (60.34)
Education level
Elementary school 337 (14.37) 4 (0.41) 46 (6.34) 287 (44.63)
Junior high school 164 (6.99) 22 (2.25) 65 (8.97) 77 (11.98)
Senior high school 496 (21.15) 140 (14.33) 228 (31.45) 128 (19.91)
Undergraduate 1127 (48.06) 671 (68.68) 316 (43.59) 140 (21.77)
Postgraduate 221 (9.42) 140 (14.33) 70 (9.66) 11 (1.71)
Marital status
Single 589 (25.12) 460 (47.08) 107 (14.76) 22 (3.42)
Married 1566 (66.78) 491 (50.26) 571 (78.76) 504 (78.38)
Other 190 (8.10) 26 (2.66) 47 (6.48) 117 (18.20)
Living alone
No 2028 (86.48) 857 (87.72) 661 (91.17) 510 (79.32)
Yes 317 (13.52) 120 (12.28) 64 (8.83) 133 (20.62)
Physical activity level
Low-active 1003 (42.77) 497 (50.87) 330 (45.52) 176 (27.37)
Moderate-active 513 (21.88) 175 (17.91) 154 (21.24) 184 (28.62)
High-active 829 (35.35) 305 (31.22) 241 (33.24) 283 (44.01)

SD, standard deviation.