Developing a nomogram for predicting the depression of senior citizens living alone while focusing on perceived social support

Table 3 A model for predicting the depression of senior citizens living alone: Odds ratio and 95% confidence interval

Variables	Crude model	Adjusted model	VIF
Alcohol use disorder
Normal drinker	1.00	1.00
High-risk drinker	1.16 (0.68, 1.99)	1.08 (0.45, 2.59)	1.14
Alcohol use disorder	17.52 (5.67, 54.06)a	1.54 (0.16, 14.80)	1.20
Self-esteem, the experience of suicidal urge over the past year
No (Ref)
Yes	12.83 (7.74, 21.26)a	3.57 (1.55, 8.22)a	1.27
Subjective trust satisfaction with neighbors
No (Ref)	1.00	1.00
Yes	0.20 (0.12, 0.32)a	1.02 (0.43, 2.40)	1.37
Subjective satisfaction with help from neighbors
No (Ref)	1.00	1.00
Yes	0.24 (0.15, 0.39)a	0.29 (0.13, 0.66)a	1.40
Subjective satisfaction of the living environment of the neighborhood
No (Ref)	1.00	1.00
Yes	0.41 (0.25, 0.66)a	0.51 (0.23, 1.10)	1.19
Subjective satisfaction of the safety level of the neighborhood
No (Ref)	1.00	1.00
Yes	0.32 (0.20, 0.53)a	0.46 (0.21, 1.04)	1.19
Subjective satisfaction of the medical service of the region
No (Ref)	1.00	1.00
Yes	0.46 (0.28, 0.73)a	0.56 (0.26, 1.20)	1.19
Regular club activities
No (Ref)	1.00	1.00
Yes	0.38 (0.20, 0.70)a	2.04 (0.81, 5.15)	1.31
Subjective loneliness
Very rare (Ref)	1.00	1.00
Occasionally lonely	12.21 (2.86, 52.14)a	5.04 (0.58, 43.39)	6.87
Often lonely	206.54 (50.13, 850.86)a	187.19 (23.17, 1512.13)a	7.89
Mostly lonely	1164.50 (210.83, 6431.88)a	758.12 (56.44, 10183.32)a	3.10
Subjective frequency of communication with other family members	0.55 (0.49, 0.61)a	0.95 (0.71, 1.27)	2.16
Subjective frequency of communication with neighbors and friends	0.59 (0.53, 0.66)a	1.10 (0.81, 1.48)	2.12
Age	0.89 (0.85, 0.93)a	1.17 (1.07, 1.26)a	1.42
Self-esteem scale	0.70 (0.65, 0.74)a	0.81 (0.72, 0.91)a	1.33

^aP < 0.05.

VIF: Variance Inflation Factor.