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Table 2 Sociodemographic data and characteristics of rural and urban disabled elderly

From: Predicting depression among rural and urban disabled elderly in China using a random forest classifier

Variables Rural Urban P value1
Non-depression Depression P value Sum Non-depression Depression P value Sum
Demographical factors
 Gender          0.636
  Male 164(46.07) 187(38.56) 0.029 351(41.74) 153(44.61) 113(40.94) 0.360 266(42.97)  
  Female 192(53.93) 298(61.44)   490(58.26) 190(55.39) 163(59.06)   353(57.03)  
 Age 71.35(0.38) 70.63(0.31) 0.0719 70.93(0.24) 72.51(0.43) 72.44(0.47) 0.911 72.48(0.32)  
 Marital status          0.179
  Married 262(73.60) 311(64.12) 0.004 573(68.13) 251(73.18) 191(69.20) 0.277 442(71.41)  
  Unmarried/divorced/widowed 94(26.40) 174(35.88)   268(31.87) 92(26.82) 85(30.80)   177(28.59)  
 Years of education          0.000
  0 261(73.31) 384(79.18) 0.001 654(76.69) 218(63.56) 175(63.41) 0.992 393(63.49)  
  1 ~ 12 61(17.13) 43(8.87)   104(12.37) 90(26.24) 72(26.09)   162(26.17)  
  > 12 34(9.55) 58(11.96)   92(10.92) 35(10.20) 29(10.51)   64(10.34)  
 Ln (Family per capita income) 8.83(0.05) 8.67(0.04) 0.0218 13,721.75(2462.48) 9.63(0.06) 9.39(0.06) 0.004 24,088.76(1953.38) 0.001
Health behavior
 Smoking          0.352
  Yes 86(24.16) 98(20.21) 0.171 184(21.88) 71(20.70) 52(18.84) 0.564 123(19.87)  
  No 270(75.84) 387(79.79)   657(78.12) 272(79.30) 224(81.16)   496(80.13)  
 Drinking more than three times a week          0.828
  Yes 39(10.96) 37(7.63) 0.096 76(9.04) 39(11.37) 19(6.88) 0.057 58(9.37)  
  No 317(89.04) 448(92.37)   765(90.96) 304(88.63) 257(993.12)   561(90.63)  
 Sleep duration          0.064
  < 6 h 34(9.55) 97(20.00) 0.000 131(15.58) 36(10.50) 80(28.99) 0.000 116(18.74)  
  6-8 h 110(30.90) 131(27.01)   241(28.66) 111(32.36) 84(30.43)   195(31.50)  
  > 8 212(59.55) 257(52.99)   469(55.77) 196(57.14) 112(40.58)   308(49.76)  
 Regular exercise          0.000
  Yes 132(37.08) 149(30.72) 0.053 281(33.41) 167(48.69) 112(40.58) 0.044 279(45.07)  
  No 224(62.92) 336(69.28)   560(66.59) 176(51.31) 164(59.42)   340(54.93)  
Health status
 Chronic disease          0.147
  Yes 94(26.40) 229(47.22) 0.000 323(38.41) 125(36.44) 136(49.28) 0.001 261(42.16)  
  No 262(73.60) 256(52.78)   518(61.59) 218(63.56) 140(50.72)   358(57.84)  
 BMI 21.93(0.23) 21.29(0.21) 0.0424 21.57(0.15) 23.04(0.23) 22.32(0.26) 0.037 22.73(0.17) 0.000
 Disease or accidence experience within the past 2 weeks          0.005
  Yes 147(41.29) 335(69.07) 0.000 482(57.31) 133(38.78) 176(63.77) 0.000 309(49.92)  
  No 209(58.71) 150(30.93)   359(42.69) 210(61.22) 100(36.23)   310(50.08)  
 Hospitalization within 1 year          0.005
  Yes 82(23.03) 176(36.29) 0.000 258(30.68) 114(33.24) 119(43.12) 0.012 233(37.64)  
  No 274(76.97) 309(63.71)   583(69.32) 229(66.76) 157(56.88)   386(62.36)  
 Ln (Total medical expenses within 1 year) 7.32(0.09) 7.92(0.08) 0.000 6730.30(538.75) 8.30(0.01) 8.55(0.10) 0.081 12,486.44(1189.13) 0.000
 Self-rated health          0.023
  Poor 127(35.67) 316(65.15) 0.000 443(52.68) 108(31.49) 170(61.59) 0.000 278(44.91)  
  Fair 84(23.60) 82(16.91)   166(19.74) 92(26.82) 66(23.91)   158(25.53)  
  Good 90(25.28) 68(14.02)   158(18.79) 97(28.28) 32(11.59)   129(20.84)  
  Very good 36(10.11) 9(1.86)   45(5.35) 31(9.04) 6(2.17)   37(5.98)  
  Excellent 19(5.34) 10(2.06)   39(3.45) 15(4.37) 2(0.72)   17(2.75)  
 Changing in perceived health          0.006
  Better 23(6.46) 34(7.01) 0.000 57(6.78) 32(9.33) 10(3.62) 0.000 42(6.79)  
  Unchanged 133(37.36) 78(16.08)   211(25.09) 140(40.82) 62(22.46)   202(32.63)  
  Worse 200(56.18) 373(76.91)   573(68.13) 171(49.85) 204(73.91)   375(60.58)  
Family relations
 Number of family members          0.000
  < 3 123(34.55) 181(37.32) 0.711 128(15.22) 123(35.86) 114(41.30) 0.383 133(21.49)  
  3–5 130(36.52) 170(35.05)   394(46.85) 152(44.31) 112(40.58)   332(53.63)  
  > 5 103(28.93) 134(27.63)   319(37.93) 68(19.83) 50(18.12)   154(24.88)  
 Number of children          0.000
  < 3 52(14.61) 76(15.67) 0.758 304(36.15) 71(20.70) 62(22.46) 0.714 237(38.29)  
  3–6 172(48.31) 222(45.77)   300(35.67) 189(55.10) 143(51.81)   264(42.65)  
  > 6 132(37.08) 187(38.56)   237(28.18) 83(24.20) 71(25.72)   118(19.06)  
 Closing to children          0.921
  Yes 302(84.83) 398(82.06) 0.288 700(83.23) 299(87.17) 215(77.90) 0.002 514(83.04)  
  No 54(15.17) 87(17.94)   141(16.77) 44(12.83) 61(22.10)   105(16.96)  
 Receiving financial assistance from children          0.000
  Yes 197(55.34) 181(37.32) 0.032 501(59.57) 149(43.44) 126(45.65) 0.582 344(55.57)  
  No 159(44.66) 304(62.68)   340(40.43) 194(56.56) 150(54.35)   275(44.43)  
 Weekly family dinner          0.393
  Seven times 319(89.61) 405(83.51) 0.012 724(86.09) 301(87.76) 222(80.43) 0.012 523(84.49)  
  Less than seven times 37(10.39) 80(16.49)   117(13.91) 42(12.24) 54(19.57)   96(15.51)  
Social relations
 Neighborhood help 1.70(0.05) 1.41(0.05) 0.000 1.58(0.04) 1.48(0.05) 1.66(0.06) 0.013 1.56(0.04) 0.615
 Neighborhood relationship 2.25(0.38) 1.88(0.04) 0.000 2.10(0.03) 2.04(0.04) 2.21(0.05) 0.020 2.14(0.03) 0.196
 Community emotion 2.01(0.04) 1.73(0.4) 0.000 1.89(0.03) 1.87(0.05) 2.18(0.06) 0.000 2.01(0.04) 0.015
 Participating organizations          0.000
  Yes 48(13.48) 61(12.58) 0.699 109(12.96) 100(29.15) 76(27.54) 0.657 176(28.43)  
  No 308(86.52) 424(87.42)   732(87.04) 243(70.85) 200(72.46)   443(71.57)  
 Trusting people          0.882
  Yes 217(61.30) 258(53.75) 0.030 475(56.95) 206(60.41) 143(51.81) 0.032 349(56.56)  
  No 137(38.70) 222(46.25)   359(43.05) 135(39.59) 133(48.19)   268(43.44)  
Subjective attitude
 Life satisfaction 4.09(0.05) 3.52(0.05) 0.000 3.76(0.04) 4.14(0.05) 3.55(0.07) 0.000 3.88(0.04) 0.030
 Having trust in the future 3.88(0.06) 3.27(0.06) 0.000 3.53(0.04) 3.97(0.06) 3.36(0.07) 0.000 3.70(0.05) 0.004