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Quartiles social-economic status (%) *
< 25% 39.1 14.9 12.1 25.3 23.1 27.0
26-50% 33.8 21.0 22.2 23.3 18.3 24.8
51-75% 18.8 30.9 31.4 26.1 23.0 24.6
> 75% 6.2 33.1 34.3 25.5 35.6 23.6
Private insurance (%)
29.1 6.9 6.1 18.0 16.0 17.2
Readmissions within 30 days (%) 7.1 5.2 5.6 6.7 6.8 5.8
Excess length of hospital stay >= 3 days (%) 19.6 14.6 15.8 17.5 18.9 16.5
* a higher quartile is associated with a lower socio-economic score
Table 2a. Differences in clinical readmission within 30 days after principle admission in
patients younger than 45 years between ethnic groups in the Netherlands between
January 1, 1995 and December 31, 2005.
Odds ratio
(95%CIs)
Odds ratio
(95%CIs)
Odds ratio
(95%CIs)
model 1 model 2 model 3
Etnicity (reference: native Dutch patients )
Moroccans 1.03 (0.99 - 1.08) 1.02 (0.97 - 1.06) 1.00 (0.96 - 1.05)
Turks 0.95 (0.91 - 0.99) 0.96 (0.92 - 1.00) 0.94 (0.90 - 0.98)
Surinamese 1.15 (1.10 - 1.19) 1.09 (1.05 - 1.14) 1.07 (1.03 - 1.12)
Antilleans
Other non- OECD migrant groups
1.12 (1.07 - 1.18) 1.07 (1.02 - 1.13) 1.06 (1.00 - 1.12)
1.04 (1.00 - 1.08)
0.97 (0.94 - 1.01)
0.96 (0.93 - 1.00)
Age (reference: age 1-5 years)
6-10 1.08 (1.03 - 1.13) 1.04 (0.99 - 1.09) 1.04 (0.99 - 1.09)
11-15 1.17 (1.12 - 1.23) 1.18 (1.12 - 1.24) 1.18 (1.12 - 1.24)
16-20 1.10 (1.05 - 1.15) 1.23 (1.17 - 1.29) 1.23 (1.17 - 1.29)
21-25 1.07 (1.02 - 1.12) 1.21 (1.15 - 1.26) 1.20 (1.15 - 1.26)
26-30 1.08 (1.03 - 1.12) 1.19 (1.14 - 1.24) 1.19 (1.14 - 1.24)
31-35 1.13 (1.08 - 1.18) 1.21 (1.16 - 1.26) 1.21 (1.16 - 1.26)
36-40
41-45
1.13 (1.09 - 1.18) 1.12 (1.08 - 1.17) 1.12 (1.08 - 1.17)
Sex (reference: female)
1.28 (1.23 - 1.33) 1.17 (1.13 - 1.22) 1.17 (1.13 - 1.22)
CCS diagnosis (reference: diseases of the heart)
0.98 (0.96 - 1.00) 0.95 (0.93 - 0.97) 0.95 (0.93 - 0.97)
Neoplasms 0.70 (0.64 - 0.76) 0.70 (0.64 - 0.76)
Coma, shock 0.72 (0.66 - 0.79) 0.72 (0.66 - 0.79)
Septicemia 0.73 (0.57 - 0.94) 0.73 (0.57 - 0.94)
Acute cerebrovascular disease
Diseases of the arteries, arterioles, and
0.41 (0.32 - 0.52) 0.41 (0.32 - 0.52)
capillaries
0.88 (0.75 - 1.03) 0.88 (0.75 - 1.03)
Diseases of the respiratoir system 0.70 (0.65 - 0.77) 0.70 (0.65 - 0.77)
Diseases of the digestive system 1.15 (1.06 - 1.24) 1.15 (1.06 - 1.24)
Diseases of the urinary system 0.65 (0.59 - 0.72) 0.65 (0.58 - 0.72)
Fractures 0.70 (0.42 - 1.16) 0.70 (0.42 - 1.16)
Incranial injury 0.17 (0.14 - 0.20) 0.17 (0.14 - 0.20)
Complication of surgical medical procedure 1.58 (1.43 - 1.74) 1.58 (1.43 - 1.74)
Other 0.58 (0.54 - 0.62) 0.58 (0.54 - 0.62)
Carlson index co-morbidity >= 2
ICD-9 Procedures (reference: no intervention)
5.26 (5.05 - 5.47) 5.25 (5.05 - 5.46)
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