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Table 2 Logistic regression of analysis of readmissions in 30-days and 1 year

From: Factors associated with 30-day and 1-year readmission among psychiatric inpatients in Beijing China: a retrospective, medical record-based analysis

 

30-day readmission model (N = 7724)

1-year readmission model (N = 7374))

Univariate models

Multivariate model

Univariate models

Multivariate model

Male (ref. female)

1.42 (1.26, 1.60)**

0.95 (0.81, 1.11)

1.36 (1.24, 1.5)**

1 (0.89, 1.12)

Age (ref. (0–40])

 (40,65]

2.63 (2.25, 3.06)**

0.84 (0.68, 1.04)

1.72 (1.54, 1.91)**

0.8 (0.69, 0.92)**

  > 65

4.71 (3.90, 5.68)**

0.92 (0.69, 1.21)

2.72 (2.33, 3.17)**

0.69 (0.55, 0.87)**

Insurance type (ref. no insurance)

 Urban employee

3.76 (2.91, 4.86)**

1.19 (0.88, 1.6)

2.81 (2.37, 3.34)**

1.42 (1.17, 1.72)**

 Urban resident

1.37 (0.98, 1.91)

0.75 (0.51, 1.09)

1.75 (1.41, 2.18)**

1.22 (0.96, 1.56)

 New rural cooperative

1.08 (0.74, 1.59)

1.12 (0.74, 1.71)

0.96 (0.74, 1.24)

0.99 (0.75, 1.31)

 Other insurances

1.77 (1.29, 2.42)**

1.03 (0.71, 1.5)

1.45 (1.17, 1.8)**

0.86 (0.76, 0.99)*

Married (ref. not married)

0.44 (0.38, 0.50)**

0.86 (0.72, 1.02)

0.58 (0.53, 0.64)**

0.86 (0.76, 0.97)**

Urban residents (ref. Suburb)

2.19 (1.90, 2.54)**

1.4 (1.15, 1.7)**

1.88 (1.69, 2.1)**

1.41 (1.23, 1.61)**

Diagnosis (ref. depressive disorders)

 Bipolar disorders

1.29 (0.95, 1.74)

1.1 (0.79, 1.54)

1.44 (1.2, 1.72)**

1.35 (1.11, 1.65)**

 Schizophrenia and related disorders

5.53 (4.30, 7.12)**

1.44 (1.06, 1.94)*

3.14 (2.68, 3.68)**

1.35 (1.12, 1.63)**

 Substance use disorders

1.49 (0.98, 2.27)

0.64 (0.4, 1.04)

1.99 (1.55, 2.57)**

1.14 (0.85, 1.53)

 Other mental disorders

3.03 (2.27, 4.06)**

1.3 (0.93, 1.81)

2.04 (1.68, 2.48)**

1.18 (0.94, 1.47)

Count of comorbidities (ref. none)

 1

2.53 (2.10, 3.04)**

1.67 (1.34, 2.09)**

2.03 (1.78, 2.32)**

1.62 (1.39, 1.89)**

  > 1

5.16 (4.41, 6.04)**

2.17 (1.75, 2.7)**

4.25 (3.78, 4.78)**

2.63 (2.25, 3.07)**

Use of ECT (ref. no ECT)

0.23 (0.19, 0.29)**

0.72 (0.56, 0.91)**

0.45 (0.4, 0.51)**

0.91 (0.79, 1.05)

Psychiatric hospitalizations 1 year prior to index admission (ref. none)

 1

4.34 (3.65, 5.17)**

1.91 (1.55, 2.36)**

3.36 (2.9, 3.89)**

1.96 (1.66, 2.31)**

 2

21.30 (17.43, 26.04)**

4.87 (3.8, 6.24)**

16.75 (13.2, 21.26)**

6.19 (4.76, 8.05)**

  ≥ 3 times

28.31 (23.39, 36.74)**

5.12 (3.87, 6.78)**

49.26 (33.62, 72.17)**

15.84 (10.58, 23.72)**

Admission sources (ref. emergency room)

 Outpatient

3.92 (3.31, 4.64)**

1.13 (0.92, 1.39)

2.14 (1.92, 2.38)**

1.07 (0.94, 1.22)

 Other

1.27 (0.82, 1.99)

0.53 (0.31, 0.9)*

1.21 (0.87, 1.68)

0.85 (0.57, 1.27)

Length of stay (ref. ≤20 days)

  (20,30]

0.45 (0.33, 0.62)**

0.45 (0.33, 0.62)**

0.9 (0.76, 1.06)

0.87 (0.73, 1.03)

  (30,40]

0.52 (0.37, 0.73)**

0.46 (0.32, 0.66)**

0.89 (0.74, 1.07)

0.8 (0.66, 0.98)*

  (40,60]

0.75 (0.56, 1.02)

0.53 (0.38, 0.74)**

1.13 (0.94, 1.35)

0.89 (0.73, 1.08)

  (60,100]

4.35 (3.47, 5.46)**

1.6 (1.21, 2.13)**

3.12 (2.63, 3.71)**

1.39 (1.13, 1.72)**

  > 100

10.40 (8.47, 12.77)**

3.27 (2.46, 4.35)**

7.96 (6.71, 9.45)**

2.29 (1.82, 2.89)**

Hospital type

 Tertiary hospitals (vs secondary hospitals)

1.38 (1.16, 1.64)**

2.61 (2.04, 3.35)**

0.95 (0.83, 1.09)

1.38 (1.14, 1.67)**

 Urban hospitals (vs rural; hospitals)

0.15 (0.13, 0.17)**

0.54 (0.44, 0.66)**

0.33 (0.3, 0.37)**

0.75 (0.65, 0.87)**

  1. Notes: * p < 0.05; ** p < 0.001; Number in the Table: Odds ratio (95% confidence interval)