Table 2 Preliminary analysis of the effects of different variables on the outcome variables and the relative importance of each of the features on the target variable.

From: Factors of acute respiratory infection among under-five children across sub-Saharan African countries using machine learning approaches

Characteristic

Feature name

Category

Cough

Fever

ARI

SARI

OR (95% CI)

Relative importance (%)

OR (95% CI)

Relative importance (%)

OR (95% CI)

Relative importance (%)

OR (95% CI)

Relative importance (%)

Socio-demographic features

Age of mother

 

0.98 (0.97,0.99)***

97.15

0.98 (0.96,0.99)***

69.85

0.94 (0.92,0.96)***

97.66

0.97 (0.94,1.00)

100

Gender

Male

0.99 (0.972,1.01)

24.42

0.98 (0.91,1.06)

18.45

1.01 (0.98,1.04)

23.27

1.02 (0.98,1.53)

24.79

 

Female

1

 

1

 

1

 

1

 

Place residence

Rural

0.99 (0.96,1.01)

12.69

1.11 (1.08,1.14)***

13.55

1.07 (1.03,1.11)**

10.69

1.19 (1.03,1.18)***

11.23

 

Urban

1

 

1

 

1

 

1

 

Education mother

Literate

0.84 (0.82,0.86)***

14.27

0.98 (0.96,1.02)

11.29

0.96 (0.92,0.99)*

13.09

0.97 (0.93,1.34)

15.44

 

Illiterate

1

 

1

 

1

 

1

 

Education father

Literate

0.87 (0.85,0.89)***

12.12

0.96 (0.94,0.98)**

8.75

0.87 (0.84,0.90)***

11.49

0.89 (0.87,0.93)***

11.53

 

Illiterate

1

 

1

 

1

 

1

 

Employment mother

Employed

0.81 (0.79,0.83)***

22.49

0.79 (0.77,0.80)***

12.49

0.82 (0.79,0.85)***

15.96

0.79 (0.75,0.85)***

14.88

 

Unemployed

1

 

1

 

1

 

1

 

Employment father

Employed

0.86 (0.82,0.90)***

5.95

0.87 (0.83,0.91)***

4.75

0.79 (0.74,0.85)***

6.14

0.86 (0.74,0.94)***

6.37

 

Unemployed

1

 

1

 

1

 

1

 

Wealth index

Poor

1.04 (1.02,1.06)***

18.95

1.17 (1.14,1.19)***

19.81

1.02 (0.97,1.04)

18.08

1.09 (1.05,1.15)***

20.88

 

Non-poor

1

 

1

 

1

 

1

 

Media exposure

Yes

0.89 (0.84, 0.88)***

26.39

0.98 (0.96, 0.99)**

15.38

0.98 (0.95, 1.01)

18.53

0.98 (0.95,1.02)

21.07

 

No

1

 

1

 

1

 

1

 

Marital status

Married

0.98 (0.950,1.01)

16.17

0.98 (0.96,1.02)

12.17

1.02 (0.96,1.07)

15.18

0.98 (0.93,1.04)

17.54

 

Not married

1

 

1

 

1

 

1

 

Size of child

Small

1.14 (1.12,1.17)***

20.6

1.10 (1.08,1.13)***

16.67

1.18 (1.14,1.23)***

20.17

1.19 (1.14,1.24)***

21.49

 

Average + 

1

 

1

 

1

 

1

 

Place delivery

Home

0.91 (0.89,0.93)***

19.47

0.94 (0.922,0.96)***

16.32

0.99 (0.96,1.03)

20.6

0.98 (0.97,1.02)

21.31

 

Health facility

1

 

1

 

1

 

1

 

Contraceptive use

Yes

1.17 (1.15.201)***

22.43

1.10 (1.06,1.12)***

16.48

1.11 (1.07,1.15)***

21.6

1.11 1.07,1.16)***

22.6

 

No

1

 

1

 

1

 

1

 

HH_size

 < 2

0.80 (0.79, 0.82)***

14.64

0.97 (0.95,0.99)***

16.99

0.92 (0.89, 0.96)***

20.86

0.93 (0.89, 0.98)*

22.07

 

 >  = 3

1

 

1

 

1

 

1

 

NU5C

02-Jan

0.91 (0.89,0.93)***

1.99

0.92 (0.90,0.94)***

17.41

0.95 (0.92,0.98)***

22.23

0.94 (0.89,0.98)**

24.43

 

 >  = 3

1

 

1

 

1

 

1

 

Health and nutrition related features

Breastfeeding

Yes

0.96 (0.94, 0.97)***

22.11

0.99 (0.97, 1.01)

9.82

0.82 (0.80, 0.84)***

10.92

0.85 (0.82, 0.88,)**

13.2

 

No

1

 

1

 

1

 

1

 

Anemia status

Yes

1.07 (1.05, 1.09)**

22.26

1.02 (0.99,1.04)

2.33

1.08 (1.05,1.11)***

3.56

1.05 (1.01,1.09)**

5.83

 

No

1

 

1

 

1

 

1

 

Stunting

Yes

1.02 (0.99,0.1.04)

12.14

1.09 (1.07, 1.12)***

5.37

1.02 (0.98, 1.05)

7.97

1.07 (1.02, 1.12)*

9.67

 

No

1

 

1

 

1

 

1

 

Wasting

Yes

1.07 (1.02,1.13)**

2.67

1.19 (1.13,1.25)***

22.88

1.12 (1.04,1.21)**

25.22

1.18 (1.08,1.29)***

26.13

 

No

1

 

1

 

1

 

1

 

Underweight

Yes

1.07 (1.03,1.12)***

6.44

1.12 (1.08,1.16)***

13.27

1.12 (1.05,1.18)***

18.38

1.17 (1.09,1.26)***

19.97

 

No

1

 

1

 

1

 

1

 

Vitamin A sup

Yes

0.72 (0.71, 0.73)***

35.32

0.78 (0.77,0.79)***

5.11

0.77 (0.75, 0.79)***

5.64

0.72 (0.69,0.74)***

5.6

 

No

1

 

1

 

1

 

1

 

Vaccination

Yes

0.89 (0.88, 0.92)***

17.29

0.84 (0.82,0.86)***

17.43

0.77 (0.75, 0.80)***

21.6

0.75 (0.72,0.78)***

22.98

 

No

1

 

1

 

1

 

1

 

Dietary diversity

 < minimum

1.13 (1.10,1.16)***

22.21

1.19 (1.16,1.21)***

71.83

1.10 (1.07,1.14)***

60.9

1.08 (1.03,1.13)**

74.07

 

Minimum

1

 

1

 

1

 

1

 

Diarrhea status

Yes

2.71 (2.66,2.77)***

59.54

4.07 (3.99,4.16)***

63.74

2.77 (2.69,2.86)***

70.48

3.67 (3.54,3.81)***

69.19

 

No

1

 

1

 

1

 

1

 

Geospatial features

EVI

 

1.00 (0.99, 1.01)

95.15

0.97 (0.96,0.98)***

77.21

0.99 (0.97,1.01)

93.49

0.98 (0.96, 0.99)**

93.87

Aridity

 

1.00 (0.98,1.02)

69.22

1.12 (1.10,1.14)***

68.75

1.00 (0.98,1.01)

87.47

1.03 (0.99, 1.07)

85.58

LST

 

1.01 (1.00,1.02)

94.97

1.02 (1.01,1.03)**

83.25

1.02 (1.01,1.04)**

64.57

1.05 (1.02, 1.07)**

63.95

Cattle

 

1.04 (1.03,1.05)***

94.62

1.00 (1.00,1.01)

65.12

1.04 (1.02,1.05)**

63.16

1.01 (0.99, 1.03)

60.66

MaxT

 

0.92 (0.91,0.93)***

66.55

1.05 (1.04,1.07)***

66.65

0.95 (0.93,0.96)**

66.77

0.98 (0.95,1.00)

65.9

MinT

 

1.02 (1.1.01,1.03)***

66.14

1.00 (0.99,1.02)

12.45

1.02 (1.00,1.04)

16.19

1.01 (0.99,1.03)

16.61

Wetday

 

1.07 (1.05,1.09)***

69.74

0.94 (0.93,0.96)***

10.71

1.08 (1.05,1.11)***

13.34

1.02 (1.00,1.05)**

14.99

Environmental features

Water

Improved

0.98 (0.96, 0.99**

16.92

0.95 (0.93, 0.96)***

1.95

0.93 (0.89, 0.96)***

1.79

0.94 (0.90, 0.98)

2.39

 

Unimproved

1

 

1

 

1

 

1

 

Toilet facility

Improved

0.84 (0.82,0.85)***

14.26

0.92 (0.90,0.94)***

11.26

0.91 (0.88,0.94)***

13.55

0.89 (0.86,0.93)***

14.43

 

Unimproved

1

 

1

 

1

 

1

 

Household air pollution and air pollutants

Cooking fuels

Cleaned

0.97 (0.94,1.03)

0

0.93 (0.89,0.96)***

0

0.82 (0.78,0.87)***

0

0.88 (0.82,0.95)**

0

 

Uncleaned

1

 

1

 

1

 

1

 

Cooking place

indoor

1.11 (1.09, 1.13) ***

20.47

1.03 (1.01,1.05)***

16.56

1.04 (1.01,1.07)**

20.29

1.02 (0.99,1.06)

21.38

 

outdoor

1

 

1

 

1

 

1

 

PM2.5

 

1.00 (0.99,1.01)

93.15

1.03 (1.02,1.04)***

98.79

1.01 (1.00,1.03)

100

0.92 (0.90,1.04)

93.65

No2

 

1.03 (1.02, 1.04)***

93.1

0.93 (0.92,0.94)***

71.27

1.03 (1.02,1.04)**

88.02

0.92 (0.90,0.94)**

87.25

Longitude

 

1.01 (1.01,1.03)***

99.31

1.07 (1.06,1.08)***

100

1.05 (1.05,1.08)***

94.49

1.11 (1.09,1.13)***

94.84

Latitude

 

1.02 (1.01,1.04)***

100

1.06 (1.05,1.07)***

83.37

1.04 (1.02,1.05)***

94.67

1.06 (1.04,1.09)***

93