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Table 2 Agreement between self-report and administrative records of public service utilization among ‘At Home’ study participants (n = 433a)

From: Accuracy of reported service use in a cohort of people who are chronically homeless and seriously mentally ill

Variables

Recall period

Agreement

Disagreement

Observed kappa (95 % CI)

Prevalence index, Bias index

PABAKb (95 % CI)

McNemar test, p value

  

Overall

Both yes

Both no

Overall

Over reporting

Under reporting

    

Hospitalized over six months for mental illness

5 years

88 %

2 %

86 %

12 %

8 %

4 %

0.21 (0.12, 0.30)

0.84, 0.05

0.77 (0.71, 0.83)

0.007

Hospitalized at least two times for mental illness

5 years

75 %

30 %

45 %

25 %

19 %

6 %

0.50 (0.41, 0.59)

0.14, 0.13

0.50 (0.42, 0.58)

<0.001

Any Hospitalization

6 months

73 %

28 %

45 %

27 %

16 %

11 %

0.44 (0.34, 0.53)

0.18, 0.04

0.46 (0.37, 0.54)

0.117

Any emergency room visitc

6 months

73 %

46 %

27 %

27 %

9 %

18 %

0.44 (0.34, 0.53)

0.19, 0.08

0.45 (0.36, 0.54)

0.002

Jaild

6 months

87 %

11 %

76 %

13 %

4 %

9 %

0.55 (0.46, 0.64)

0.66, 0.06

0.74 (0.68, 0.81)

0.001

Income source: disability or income assistance

Past month

91 %

86 %

5 %

9 %

8 %

1 %

0.47 (0.38, 0.56)

0.81, 0.07

0.82 (0.76, 0.87)

<0.001

  1. aOut of 497 participants, 433 provided consent to access to administrative data and were linkable to health records
  2. bPABAK means prevalence adjusted and bias adjusted kappa
  3. cRestricted to 387 participants
  4. dAnalysis was restricted to 428 participants since consent status varied across public service domains