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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

VariableUnivariate AnalysisMultivariate analysis
OR95% CIp-valueOR95% CIp
Demographic Factors
Age group < 5 years1.04(0.64,1.71)0.874   
Sex- Male0.85(0.51,1.41)0.531   
Father occupation – Skilled2.33(1.37,4)0.0021.25(0.21,3125)0.663
Mother occupation – Skilled0.67(0.38,1.16)0.157   
Highest family education –atleast high school1.54(0.89,2.7)0.122   
Socio Economic Score – Middle or high2.32(1.35,4)0.0021.35(0.45,3.57)0.546
Environmental Factors
Location of house – Adjoining field1.56(0.91, 2.7)0.109   
Road leading to house – Paved0.93(0.55,1.56)0.773   
Presence of water body within 100 m2.65(1.43,4.94)0.0023.56(1.36,9.75)0.011
Terraced house1.37(0.79,2.38)0.254   
Cemented/tiled floor2.08(0.56,7.75)0.275   
Plastered walls2.76(1.01,7.57)0.0488.03(0.99,187.97)0.091
Concrete roof1.49(0.86,2.6)0.157   
House with > 2 rooms2.33(1.41,3.87)0.0011.18(0.52,2.68)0.678
Furniture used for sitting1.83(1.02,3.3)0.0441.53(0.55,4.43)0.413
Cot used for sleeping2.18(1.28,3.73)0.0041.52(0.56,4.15)0.401
Paved surroundings1.43(0.87,2.35)0.156   
Piped drain for sullage2.4(1.32,4.35)0.0041.22(0.43,3.54)0.703
Cesspool around the house1.26(0.51,3.11)0.611   
Cooking outside the house1.92(0.95,3.86)0.0685.61(1.51,23.01)0.011
Gas used for cooking1.45(0.78,2.7)0.239   
Toilet present1.75(1.06,2.85)0.0271.19(0.42,3.33)0.731
Agricultural produce stored in house2.22(1.22,4)0.0081.2(0.43,3.22)0.742
Stored firewood present0.97(0.57,1.64)0.911   
Wood piled in yard1.00(0.59,1.67)0.99   
Owns live stock1.2(0.71,2)0.482   
Owns pets2.27(1.19, 4.35)0.0133.33(1.16,9.09)0.031
Has contact with pets0.67(0.38,1.19)0.169   
Rodents spotted within house0.94(0.55,1.64)0.836   
Rodents spotted around the house1.22(0.41,3.7)0.721   
Presence of bushes within 5 m of the house2.27(1.27,4.17)0.0062.78(1.11,7.69)0.033
Drying clothes on clothesline0.49(0.23,1.04)0.0640.31(0.08, 1.08)0.077
Child’s Behavioural Factors
Usually partially dressed at home0.71(0.4,1.26)0.241   
Wears footwear during play1.73(0.72,4.16)0.218   
Plays outdoors usually0.38(0.21,0.68)0.0010.42(0.14,1.23)0.115
Usually sits on furniture2.23(1.02,4.86)0.0430.45(0.13,1.48)0.193
Usually sleeps on cot2.23(1.3,3.81)0.0041.53(0.64,3.74)0.341
Sleep outside house - Yes0.99(0.23,4.24)0.991   
Uses toilet1.51(0.9,2.55)0.118   
Usually bathes after play1.92(0.78,4.69)0.153   
Usually changes clothes before sleep1.39(0.55,3.47)0.484   
Goes to school by vehicle4.38(2.29,8.37)< 0.0013.12(1.40,7.12)0.006
Uses insect repellent1.92(0.81,4.54)0.139