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Table 1 Description of the sample characteristics after data weighted from 2003/2004 to 2014 [percent, estimator (95 %.CI.)]

From: Elderly hospitalization and the New-type Rural Cooperative Medical Scheme (NCMS) in China: multi-stage cross-sectional surveys of Jiangxi province

Variable 2003/2004 2006 2008 2010 2012 2014
Overall sample
 Total responses (n) a 7792 8080 9586 7506 7857 7810
 Total responses (n) 850519 1049234 1110086 1127340 1126276 1464991
 Household (n) a 1838 1924 1879 1888 1890 1896
 Household (n) 166452 219186 202718 253229 239076 307098
 Per-capita financial level for NCMS a c 43 66 123 173 306 370
 Per-capita hospitalization cost c 3931.15 (1755.74, 6106.57) 4368.88 (2411.44, 6326.27) 5182.37 (3601.72, 6763.03) 4256.32 (3201.31, 5311.32) 6072.76 (5243.59, 6901.92) 7245.03 (6580.56, 7909.52)
 Sex
  Male 52.17 (49.51, 54.82) 52.39 (49.92, 54.85) 51.88 (50.99, 52.77) 51.83 (50.91, 52.75) 51.74 (50.85, 52.63) 51.78 (50.79, 52.78)
  Female 47.83 (45.18, 50.49) 47.61 (45.15, 50.08) 48.12 (47.23, 49.01) 48.17 (47.25, 49.09) 48.26 (47.37, 49.15) 48.22 (47.22, 49.21)
 Age
  0 ~ 64 93.38 (90.62, 95.37) 93.44 (90.94, 95.29) 92.80 (89.94, 94.89) 92.80 (90.56, 94.55) 92.75 (91.99, 93.45) 91.54 (89.85, 92.97)
  65~ 6.62 (4.63, 9.38) 6.56 (4.71, 9.06) 7.20 (5.11, 10.05) 7.20 (5.45, 9.44) 7.25 (6.55, 8.01) 8.46 (7.03,10.15)
Sample of elderly b
 Response (n) a 631 631 833 615 667 766
 Sex
  Male 50.48 (47.50, 53.46) 50.48 (48.28, 52.67) 50.36 (46.28, 54.44) 50.05 (45.28, 54.81) 49.74 (45.95, 53.52) 51.30 (46.17, 56.41)
  Female 49.52 (46.54, 52.50) 49.52 (47.33, 51.72) 49.64 (45.56, 53.72) 49.95 (45.19, 54.72) 50.26 (46.48, 54.05) 48.70 (43.59, 53.83)
 Age
  65~ 60.60 (57.17, 63.93) 62.72 (56.88, 68.20) 65.97 (59.09, 72.24) 67.24 (59.52, 74.12) 68.03 (55.38, 78.48) 63.10 (55.05, 70.49)
  75~ 34.77 (28.53, 41.57) 33.35 (28.16, 38.98) 29.30 (23.85, 35.41) 27.90 (21.00, 36.03) 27.13 (17.68, 39.22) 29.68 (23.48, 36.74)
  85~ 4.63 (1.85, 11.15) 3.93 (2.87, 5.37) 4.73 (2.81, 7.85) 4.86 (3.17, 7.39) 4.85 (3.21, 7.26) 7.21 (4.96, 10.38)
 Occupation
  Farmer 97.30 (93.95, 98.82) 96.57 (94.13, 98.02) 95.53 (92.81, 97.25) 92.65 (81.16, 94.89) 91.25 (84.51, 95.23) 90.09 (87.26, 92.34)
  No-farmer 2.70 (1.18, 6.05) 3.43 (1.98, 5.87) 4.47 (2.75, 7.19) 7.35 (3.11, 16.84) 8.75 (4.77, 15.49) 9.91 (7.66, 12.74)
 Educational level
  Illiterate 49.80 (43.80, 55.80) 36.78 (30.15, 43.95) 31.03 (23.15, 40.18) 27.23 (20.29, 35.49) 16.43 (11.81, 22.40) 28.74 (24.46, 33.44)
  Elementary school 42.82 (36.97, 48.87) 54.20 (46.14, 62.06) 56.17 (46.64, 65.27) 54.87 (44.49, 64.84) 67.91 (58.81, 75.82) 54.00 (37.70, 69.49)
  Middle school and above 7.39 (3.68, 14.29) 9.02 (3.99, 19.12) 12.80 (6.41, 23.93) 17.90 (12.30, 25.31) 15.67 (9.08, 25.69) 17.25 (7.67, 34.34)
 Marital status
  Married 64.16 (54.25, 72.99) 54.49 (50.50, 58.42) 62.93 (51.03, 73.44) 59.61 (52.70, 66.15) 62.21 (58.77, 65.54) 64.16 (57.08, 70.68)
  Unmarried/divorced/widowed 35.84 (27.01, 45.74) 45.51 (41.58, 49.50) 37.07 (26.56, 48.97) 40.39 (33.85, 47.30) 37.79 (34.46, 41.23) 35.84 (29.32, 42.92)
 Labor force
  Yes 11.08 (8.27, 14.69) 31.46 (27.23, 36.03) 14.89 (12.03, 18.28) 33.21 (27.59, 39.35) 40.19 (35.34, 45.24) 44.92 (38.38, 51.65)
  No 88.92 (85.31, 91.73) 68.54 (63.97, 72.77) 85.11 (81.72, 87.97) 66.79 (60.65, 72.41) 59.81 (54.76, 64.66) 55.08 (48.35, 61.62)
 Chronic disease
  Yes 25.87 (21.43, 30.87) 23.10 (15.37, 33.20) 25.69 (17.22, 36.50) 31.43 (27.68, 35.45) 22.70 (19.62, 26.11) 29.62 (24.53, 35.27)
  No 74.13 (69.13, 78.57) 76.90 (66.80, 84.63) 74.31 (63.50, 82.78) 64.55 (59.25, 72.32) 77.30 (73.89, 80.38) 70.38 (64.73, 75.47)
 NCMS
  Yes 0.00 (0.00, 0.00) 96.66 (89.85, 98.96) 99.29 (97.91, 99.76) 99.63 (97.13, 100.00) 100.00 (100.00, 100.00) 100.00 (100.00, 100.00)
  No 100.00 (100.00,100.00) 3.34 (1.04, 10.15) 0.71 (0.24, 2.09) 0.36 (0.05, 2.87) 0.00 (0.00, 0.00) 0.00 (0.00, 0.00)
 Per-capita income per year [mean, estimator (95 %.CI.)]c 3882.56 (3031.80, 4733.33) 8589.0 (7055.90 10122.21) 6339.38 (4278.85, 8399.91) 8443.24 (7860.20, 9026.29) 8375.49 (7070.40, 9680.57) 15653.19 (6814.34, 24492.04)
  1. a Without weighted the data
  2. b Elderly: aged 65 and above
  3. c Per-capita financial level, Per-capita hospitalization cost and Annual per capita household income were inflated to the year of 2014 using rural consumer price index; their units are RMB (Yuan)