Table 2 Univariate analysis of the differences between patients with and without suicidal ideation (N = 1363)

Demography

 Mean age in years (S.D.)

61.6 (15.2)

68.4 (14.5)

≤.001

 Female/male

63.5%/36.5%

66.7%/33.3%

 Married/unmarried or divorced, bereaved

65.5%/34.5%

43.0%/57%

≤.001

 Lower education/higher education

52.7%/47.3%

72.2%/27.8%

≤.001

 Urban area/rural area

62.8%/37.2%

59.4%/40.6%

 Living alone/living together

20.0%/80.0%

36.3%/63.7%

≤.001

Health status

 Good/bad subjective health status

73.9%/26.1%

36.1%/63.9%

≤.001

 Never/had diagnosed mental illness

91.9%/8.1%

78.1%/21.9%

≤.001

 Depression (PHQ-9 ≥ 15)/not depression

0.5%/99.5%

22.1%/77.9%

≤.001

Reason for seeing a doctor

 Physical illness (acute)

≤.001

 Physical illness (chronic)

 Medical check up

 Others