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Table 2 Birth percentages and monthly odds ratios with 95%CI for each and all immune-mediated diseases

From: Month of birth, vitamin D and risk of immune-mediated disease: a case control study

Month

All immune-mediated diseases

Multiple sclerosis

Rheumatoid arthritis

 

Birth %

OR

95% CI

Birth %

OR

95% CI

Birth %

OR

95% CI

Jan

8.63

1.02 +

0.99 to 1.04

8.51

1.01

0.97 to 1.05

8.44

0.99

0.95 to 1.03

Feb

7.90

1.01

0.99 to 1.04

7.76

0.99

0.95 to 1.03

7.94

1.02

0.98 to 1.06

Mar

8.88

1.00

0.98 to 1.02

8.67

0.97

0.93 to 1.01

8.99

1.01

0.98 to 1.05

Apr

8.77

1.05 +

1.02 to 1.07

8.79

1.05 +

1.002 to 1.09

8.78

1.05 +

1.01 to 1.08

May

8.83

1.01

0.99 to 1.03

9.41

1.08 +

1.04 to 1.13

8.64

0.99

0.95 to 1.03

Jun

8.44

1.01

0.99 to 1.04

8.70

1.04

1.01 to 1.09

8.47

1.02

0.98 to 1.06

Jul

8.49

0.99

0.97 to 1.01

8.51

0.99

0.95 to 1.04

8.37

0.98

0.94 to 1.01

Aug

8.16

0.97 -

0.95 to 0.99

8.20

0.98

0.94 to 1.02

8.14

0.97 -

0.93 to 1.00

Sep

8.12

1.00

0.97 to 1.02

7.94

0.96

0.92 to 1.01

8.10

1.00

0.96 to 1.03

Oct

8.05

0.95 -

0.92 to 0.97

8.08

0.96 -

0.92 to 1.00

8.20

0.96 -

0.93 to 0.99

Nov

7.61

0.98

0.96 to 1.00

7.43

0.96 -

0.91 to 1.00

7.65

0.99

0.95 to 1.02

Dec

8.11

1.01

0.99 to 1.03

8.01

1.00

0.96 to 1.04

8.30

1.04 +

1.00 to 1.07

Month

Ulcerative colitis

Systemic lupus erythematosus

Crohn's disease

 

Birth %

OR

95% CI

Birth %

OR

95% CI

Birth %

OR

95% CI

Jan

8.63

1.02

0.97 to 1.06

9.57

1.14 +

1.03 to 1.27

8.99

1.06 +

1.01 to 1.11

Feb

8.07

1.04 +

0.99 to 1.09

7.86

1.00

0.90 to 1.13

7.84

1.01

0.96 to 1.06

Mar

8.90

1.00

0.96 to 1.05

8.75

0.98

0.88 to 1.09

8.94

1.01

0.96 to 1.06

Apr

8.92

1.06 +

1.02 to 1.11

8.85

1.05

0.95 to 1.18

8.54

1.02

0.97 to 1.07

May

8.73

1.00

0.96 to 1.05

9.71

1.12 +

1.01 to 1.24

8.40

0.96 -

0.91 to 1.01

Jun

8.25

0.99

0.94 to 1.04

7.61

0.90

0.81 to 1.02

8.44

1.02

0.97 to 1.07

Jul

8.44

0.99

0.94 to 1.03

8.58

1.00

0.90 to 1.12

8.75

1.03

0.98 to 1.08

Aug

8.15

0.97 -

0.93 to 1.02

8.40

1.00

0.90 to 1.12

8.13

0.97

0.92 to 1.02

Sep

8.18

1.00

0.96 to 1.05

7.51

0.91 -

0.81 to 1.02

8.45

1.04 +

0.99 to 1.10

Oct

7.91

0.93 -

0.88 to 0.97

7.93

0.94

0.84 to 1.05

7.89

0.92 -

0.87 to 0.97

Nov

7.69

0.99

0.95 to 1.04

7.09

0.91 -

0.81 to 1.03

7.78

1.00

0.95 to 1.06

Dec

8.13

1.01

0.97 to 1.06

8.13

1.02

0.91 to 1.14

7.84

0.97

0.93 to 1.03

  1. + and - indicate highest and lowest odds ratios, respectively. CI: confidence intervals; OR: odds ratio.