Table 3 Zero Inflated Negative Binomial model of total work absence 1994–2008. IRR for immigrant versus native Swede

Sick leave 1993

Immigrant Mean(SD)

Native Swede Mean(SD)

Adjusted IRR Immigrant vs Native Swede

95 % CI

p-value

0

n = 12059 555 (798)

n = 107631 283 (532)

1.59

1.54–1.63

<.0001

1–7

n = 542 759 (884)

n = 4298 539 (803)

1.29

1.15–1.46

<.0001

8–14

n = 226 1033 (1136)

n = 2077 564 (836)

1.63

1.36–1.97

<.0001

15–28

n = 315 894 (1007)

n = 2190 655 (962)

1.32

1.12–1.54

0.0007

29–59

n = 318 1112 (1165)

n = 2120 768 (1053)

1.31

1.12–1.53

0.0007

60–89

n = 150 1158 (1270)

n = 880 917 (1175)

1.12

0.89–1.41

0.3448

90–119

n = 84 1546 (1441)

n = 506 1000 (1219)

1.40

1.03–1.90

0.0294