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Table 2 Univariate and multivariate analysis on demographic, environmental and behavioural factors associated with acquisition of scrub typhus

From: Risk factors for acquisition of scrub typhus in children admitted to a tertiary centre and its surrounding districts in South India: a case control study

Variable

Univariate Analysis

Multivariate analysis

OR

95% CI

p-value

OR

95% CI

p

Demographic Factors

Age group < 5 years

1.04

(0.64,1.71)

0.874

   

Sex- Male

0.85

(0.51,1.41)

0.531

   

Father occupation – Skilled

2.33

(1.37,4)

0.002

1.25

(0.21,3125)

0.663

Mother occupation – Skilled

0.67

(0.38,1.16)

0.157

   

Highest family education –atleast high school

1.54

(0.89,2.7)

0.122

   

Socio Economic Score – Middle or high

2.32

(1.35,4)

0.002

1.35

(0.45,3.57)

0.546

Environmental Factors

Location of house – Adjoining field

1.56

(0.91, 2.7)

0.109

   

Road leading to house – Paved

0.93

(0.55,1.56)

0.773

   

Presence of water body within 100 m

2.65

(1.43,4.94)

0.002

3.56

(1.36,9.75)

0.011

Terraced house

1.37

(0.79,2.38)

0.254

   

Cemented/tiled floor

2.08

(0.56,7.75)

0.275

   

Plastered walls

2.76

(1.01,7.57)

0.048

8.03

(0.99,187.97)

0.091

Concrete roof

1.49

(0.86,2.6)

0.157

   

House with > 2 rooms

2.33

(1.41,3.87)

0.001

1.18

(0.52,2.68)

0.678

Furniture used for sitting

1.83

(1.02,3.3)

0.044

1.53

(0.55,4.43)

0.413

Cot used for sleeping

2.18

(1.28,3.73)

0.004

1.52

(0.56,4.15)

0.401

Paved surroundings

1.43

(0.87,2.35)

0.156

   

Piped drain for sullage

2.4

(1.32,4.35)

0.004

1.22

(0.43,3.54)

0.703

Cesspool around the house

1.26

(0.51,3.11)

0.611

   

Cooking outside the house

1.92

(0.95,3.86)

0.068

5.61

(1.51,23.01)

0.011

Gas used for cooking

1.45

(0.78,2.7)

0.239

   

Toilet present

1.75

(1.06,2.85)

0.027

1.19

(0.42,3.33)

0.731

Agricultural produce stored in house

2.22

(1.22,4)

0.008

1.2

(0.43,3.22)

0.742

Stored firewood present

0.97

(0.57,1.64)

0.911

   

Wood piled in yard

1.00

(0.59,1.67)

0.99

   

Owns live stock

1.2

(0.71,2)

0.482

   

Owns pets

2.27

(1.19, 4.35)

0.013

3.33

(1.16,9.09)

0.031

Has contact with pets

0.67

(0.38,1.19)

0.169

   

Rodents spotted within house

0.94

(0.55,1.64)

0.836

   

Rodents spotted around the house

1.22

(0.41,3.7)

0.721

   

Presence of bushes within 5 m of the house

2.27

(1.27,4.17)

0.006

2.78

(1.11,7.69)

0.033

Drying clothes on clothesline

0.49

(0.23,1.04)

0.064

0.31

(0.08, 1.08)

0.077

Child’s Behavioural Factors

Usually partially dressed at home

0.71

(0.4,1.26)

0.241

   

Wears footwear during play

1.73

(0.72,4.16)

0.218

   

Plays outdoors usually

0.38

(0.21,0.68)

0.001

0.42

(0.14,1.23)

0.115

Usually sits on furniture

2.23

(1.02,4.86)

0.043

0.45

(0.13,1.48)

0.193

Usually sleeps on cot

2.23

(1.3,3.81)

0.004

1.53

(0.64,3.74)

0.341

Sleep outside house - Yes

0.99

(0.23,4.24)

0.991

   

Uses toilet

1.51

(0.9,2.55)

0.118

   

Usually bathes after play

1.92

(0.78,4.69)

0.153

   

Usually changes clothes before sleep

1.39

(0.55,3.47)

0.484

   

Goes to school by vehicle

4.38

(2.29,8.37)

< 0.001

3.12

(1.40,7.12)

0.006

Uses insect repellent

1.92

(0.81,4.54)

0.139