Skip to main content

Table 5 Ordinal regression analysis with vitamin D status as the dependent variable. Vitamin D status was classified as deficient, insufficient or sufficient. Odds ratios and 95% confidence intervals, with vitamin D sufficiency as the reference status, are shown. The category shown in parenthesis against each dichotomous variable is associated with the odds ratio of being vitamin D sufficient as compared to the alternative category

From: Vitamin D status in Kancheepuram District, Tamil Nadu, India

 

Odds ratio

95% Confidence interval

Sig.

Upper bound

Lower bound

Birth place (Urban)

0.61

0.29

1.29

0.195

Awareness of Vitamin D (Yes)

1.14

0.66

2.00

0.631

Source of drinking water (Bottled)

0.86

0.66

1.12

0.265

Drinking water boiled/filtered – (Yes)

0.67

0.41

1.09

0.104

Tap water at home (Yes)

1.02

0.65

1.59

0.931

Closed toilet system (Yes)

0.59

0.37

0.93

0.022

Consumption of milk (Yes)

1.11

0.74

1.65

0.613

Educational qualification (High school and above)

0.80

0.69

0.94

0.005

Occupation (Professional)

1.01

0.91

1.13

0.802

Sun exposure per day 15–30 min

0.31

0.14

0.71

0.006

Sun exposure per day 30–60 min

0.49

0.30

0.80

0.004

Sun exposure per day 60–120 min

0.82

0.48

1.40

0.468

Sun exposure per day > 120 min

0(a)

  

.

SES Upper & Upper Middle Class

1.10

0.56

2.15

0.780

SES Lower Middle Class

0.71

0.44

1.15

0.166

SES Upper Lower & Lower Class

0(a)

  

.

Gender (Male)

2.00

1.30

3.09

0.002

Age group 18–30 years

0.76

0.36

1.58

0.462

Age group 31–45 years

1.03

0.51

2.09

0.924

Age group 46–60 years

1.35

0.65

2.82

0.423

Age group > 60 years

0(a)

  

.

Consumption of fatty fish (No)

0.48

0.24

0.95

0.035

  1. (a)This parameter is set to zero because it is redundant