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Table 5 Number of outpatient (OP) visits and inpatient (IP) admissions from linked and questionnaire data

From: HERALD (Health Economics using Routine Anonymised Linked Data)

 

Number of OP Visits from linked data

(Mean [95% CI])

# of self-reported OP visits from Questionnaire

Average Number of IP admissions from linked data

(Mean [95% CI])

# of self-reported IP admissions from Questionnaire

 

1

2

3

4

5

6

7

8

Patient Stratification Schemes

5 year

1 year

3 month recall period

3 months recall period

5 year

1 year

3 month recall period

3 months recall period

Disease Severity Index

Low (BASDAI < 40)

(n = 119 & 133)

16.78

[13.50-20.06]

3.84

[2.96-4.72]

0.87

[0.64-1.09]

1.06

[0.76-1.36]

2.43

[1.38-3.48]

0.59

[0.26-0.91]

0.11

[0.05-0.17]

0.08

[0.03-0.13]

High (BASDAI > = 40)

(n = 117 & 163)

21.89

[16.87-26.91]

6.12

[4.29-7.95]

1.51

[1.06-1.97]

2.55

[1.54-3.55]

3.01

[2.27-3.76]

0.74

[0.51-0.97]

0.17

[0.10-0.23]

0.14

[0.07-0.21]

Disease Functional Index

Low (BASFI < 40)

(n = 110 & 117)

14.17

[11.23-17.12]

3.05

[2.28-3.81]

0.73

[0.53-0.93]

0.90

[0.62-1.18]

2.31

[1.06-3.55]

0.46

[0.12-0.80]

0.11

[0.05-0.17]

0.05

[0.01-0.09]

High (BASFI > = 40)

(n = 126 & 179)

23.80

[18.93-28.67]

6.65

[4.92-8.39]

1.59

[1.16-2.02]

2.58

[1.64-3.52]

3.04

[2.40-3.69]

0.81

[0.58-1.04]

0.16

[0.10-0.22]

0.16

[0.09-0.23]

Age

Age < 50

(n = 90 & 164)

18.29

[14.64-21.94]

5.07

[3.10-7.03]

1.30

[0.81-1.79]

1.72

[0.80-2.65]

1.91

[1.29-2.54]

0.49

[0.24-0.74]

0.16

[0.08-0.25]

0.05

[0.01-0.09]

Age > = 50

(n = 146 & 192)

19.95

[15.65-24.24]

4.91

[3.79-6.03]

1.12

[0.84-1.39]

1.84

[1.20-2.48]

3.21

[2.31-4.11]

0.77

[0.51-1.04]

0.13

[0.08-0.18]

0.15

[0.08-0.22]

Sex

Male

(n = 183 & 218)

18.20

[14.85-21.55]

4.35

[3.48-5.22]

1.02

[0.79-1.25]

1.60

[1.08-2.12]

2.47

[1.96-2.97]

0.55

[0.40-0.69]

0.13

[0.08-0.18]

0.10

[0.05-0.15]

Female

(n = 53 & 76)

23.15

[16.50-29.80]

7.11

[3.71-10.52]

1.77

[0.98-2.57]

2.47

[0.95-4.00]

3.59

[1.62-5.57]

1.03

[0.40-1.66]

0.16

[0.06-0.26]

0.14

[0.05-0.24]

Disease Symptom

First Symptom at age < = 30

(n = 182 & 226)

19.04

[15.51-22.57]

4.81

[3.59-6.04]

1.23

[0.92-1.54]

1.85

[1.20-2.51]

2.38

[1.95-2.81]

0.58

[0.42-0.73]

0.14

[0.09-0.19]

0.10

[0.05-0.15]

First Symptom at age > 30

(n = 54 & 70)

20.22

[14.69-25.75]

5.50

[3.86-7.14]

1.04

[0.68-1.40]

1.61

[0.95-2.27]

3.97

[1.71-6.23]

0.99

[0.33-1.65]

0.16

[0.05-0.26]

0.17

[0.06-0.28]