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Table 2 Descriptive Statistics of All Variables in the Analyses

From: Trajectories of middle-aged and elderly people’s chronic diseases Disability Adjusted Life Years (DALYs): cohort, socio-economic status and gender disparities

Variables 1942–1947 1948–1953 1954–1959 1960–1964 All
Disease Burden [Mean (SD)]
 DALYs (2011) 1.46 (2.74) 1.25 (2.48) 0.95 (2.03) 0.73 (1.60) 1.10 (2.37)
 DALYs (2013) 2.54 (3.65) 2.14 (3.25) 1.63 (2.61) 1.28 (2.16) 1.89 (3.09)
 DALYs (2015) 3.00 (3.99) 2.54 (3.56) 1.94 (2.90) 1.57 (2.50) 2.23 (3.36)
 DALYs (2018) 3.24 (4.18) 2.75 (3.76) 2.10 (3.07) 1.72 (2.67) 2.41 (3.55)
Gender [N (%)]
 female 806 (46.69) 1623 (50.62) 1511 (50.37) 1545 (53.98) 7949 (52.66)
 male 816 (50.31) 1583 (49.38) 1498 (49.63) 1317 (46.02) 7146 (47.31)
SES-Resident place [N (%)]
 Urban 363 (22.38) 650 (20.27) 552 (18.39) 521 (18.20) 3019 (19.99)
 Rural 1259 (77.62) 2557 (79.73) 2449 (81.61) 2342 (81.80) 12,082 (80.01)
SES-education [N (%)]
 Illiterate 490 (30.27) 943 (29.41) 747 (24.92) 358 (12.5) 4071 (26.99)
 Elementary school 753 (46.51) 1598 (49.84) 1111 (37.07) 904 (31.58) 6045 (40.07)
 Middle school and higher 376 (23.22) 665 (20.74) 1139 (38.00) 1601 (55.92) 4970 (32.94)
SES-Family income [Mean (SD)]
 income (log) 4.17 (0.61) 4.29 (0.59) 4.41 (0.59) 4.54 (0.52) 4.33 (0.62)
Marriage status [N (%)]
 have spouse 1298 (80.02) 2683 (83.66) 2550 (84.97) 2447 (85.47) 12,333 (81.67)
 no spouse 324 (19.98) 524 (83.66) 451 (15.03) 416 (14.53) 2768 (18.33)
Medical variables [Mean (SD)]
 Hospitalization OOP percent 0.21 (0.40) 0.38 (10.77) 0.16 (0.34) 1.335 (6.47) 1.114 (6.53)
 Doctor visit OOP percent 0.37 (0.48) 0.63 (12.72) 0.35 (0.49) 0.37 (0.63) 0.42 (6.80)
Hospitalization OOP [N (%)]
 Q1 1087 (67.02) 2268 (70.72) 2277 (75.87) 2312 (80.75) 11,097 (73.49)
 Q2 535 (32.98) 939 (29.28) 724 (24.13) 551 (19.25) 4004 (26.51)
Hospitalization total fee [N (%)]
 Q1 1065 (65.66) 2243 (69.94) 2255 (75.14) 2289 (79.95) 10,942 (72.46)
 Q2 557 (34.34) 964 (30.06) 746 (24.86) 574 (20.05) 4159 (27.54)
Doctor visit OOP [N (%)]
 Q1 894 (55.12) 1819 (56.72) 1799 (59.95) 1703 (59.48) 8794 (58.23)
 Q2 728 (44.88) 1388 (43.28) 1202 (40.05) 1160 (40.52) 6307 (41.77)
Doctor visit total fee [N (%)]
 Q1 871 (53.7) 1792 (55.88) 1777 (59.21) 1683 (58.78) 8669 (57.41)
 Q2 751 (46.3) 1415 (44.12) 1224 (40.79) 1180 (41.22) 6432 (42.59)
Died
 died = 1 148 (7.14) 124 (3.69) 70 (2.06) 39 (1.12) 729 (4.83)
 not died = 0 1924 (92.86) 3235 (96.31) 3327 (97.94) 3438 (98.88) 14,372 (95.17)
Smoking
 smoking = 1 879 (42.42) 1378 (41.04) 1402 (41.32) 1230 (35.42) 4889 (39.76)
 Not smoking = 0 1193 (57.58) 1980 (58.96) 1991 (58.68) 2243 (64.58) 7407 (60.24)
Drinking
 drinking = 1 654 (30.31) 748 (24.36) 749 (24.45) 720 (22.82) 2871 (25.08)
 drinking = 0 1504 (69.69) 2323 (75.64) 2315 (75.54) 2435 (77.78) 8577 (74.92)