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. 2022 Apr 12;22:257. doi: 10.1186/s12888-022-03907-1

Table 2.

Univariate analyses of clinical characteristics and SSD

Subgroup Non-Elderly(n = 2206) Elderly(n = 6814)
SSD Non-SSD X2 P Value SSD Non-SSD X2 P Value
Gender 33.816  < .001 76.701  < .001
 Male 251(36.2) 442(63.8) 1453(56.6) 1114(43.4)
 Female 747(49.5) 762(50.5) 2842(67.2) 1389(32.8)
Age group - - 39.444  < .001
 60–69 - - 1964(59.6) 1331(40.4)
 70–79 - - 1720(65.6) 900(34.4)
  ≥ 80 - - 623(69.3) 276(30.7)
Education 18.415  < .001 4.793 .188
 Middle school and below 312(46.6) 358(53.4) 2233(64.1) 1248(35.9)
 High school 316(51.2) 301(48.8) 1234(61.4) 776(38.6)
 College 350(40.7) 509(59.3) 797(63.2) 465(36.8)
 Master and above 20(35.7) 36(64.3) 31(68.9) 14(31.1)
Marital status 1.638 .651 15.136 .002
 Never married 71(41.3) 101(58.7) 192(62.5) 115(37.5)
 Married 837(45.4) 1005(54.6) 3666(62.5) 2202(37.5)
 Divorced 11(47.8) 12(52.2) 67(74.4) 23(25.6)
 Widowed 79(47.9) 86(52.1) 370(69.4) 163(30.6)
Hypertension 40.444  < .001 40.384  < .001
 Yes 243(59.4) 166(40.6) 2415(66.7) 1206(33.3)
 No 756(42.1) 1041(57.9) 1892(59.3) 1301(40.7)
Diabetes mellitus 33.488  < .001 54.448  < .001
 Yes 124(65.3) 66(34.7) 1222(70.6) 509(29.4)
 No 875(43.4) 1141(56.6) 3085(60.7) 1998(39.3)
Cardio/Cerebrovascular disease 55.192  < .001 307.888  < .001
 Yes 114(74.0) 40(26.0) 1521(79.6) 389(20.4)
 No 885(43.1) 1167(56.9) 2786(56.8) 2118(43.2)
Endocrine and metabolic disease except DM 0.126 .722 6.875 .009
 Yes 7(50.0) 7(50.0) 59(77.6) 17(22.4)
 No 992(45.3) 1200(54.7) 4248(63.0) 2490(37.0)
Other diseases 8.728 .003 17.632  < .001
 Yes 21(72.4) 8(27.6) 100(81.3) 23(18.7)
 No 978(44.9) 1199(55.1) 4207(62.9) 2484(37.1)
Surgery 2.882 .090 3.343 .067
 Yes 4(100.0) 0(0.0) 55(73.3) 20(26.7)
 No 995(45.2) 1207(54.8) 4252(63.1) 2487(36.9)
Antipsychotic 7.611 .006 47.229  < .001
 Yes 8(100.0) 0(0.0) 138(89.6) 16(10.4)
 No 991(45.1) 1207(54.9) 4169(62.6) 2491(37.4)