Table 4 Multi-variable multilevel logistic regression analysis results of both individual-level and community-level factors associated with comorbidity of diarrhea and acute respiratory tract infection in low-and-middle income countries.

From: The comorbidities of diarrhea and acute respiratory tract infection and risk factors among under-five children in 45 low- and middle-income countries

Variable

Response

Model II

AOR (95%, CI)

Model III

AOR (95%CI)

Model IV

AOR (95%CI)

Socio-demographic and child related factors

 Mothers education

No education

Primary

Secondary

1

1.14 (1.02–1.27)

1.22 (1.11–1.34)

 

1

1.04 (0.93–1.16)

1.07 (0.97–1.29)

 Fathers education

No education

Primary

Secondary

1

0.75 (0.68–0.82)

1.03 (0.94–1.12)

 

1

0.93 (0.96–1.16)

1.17 (0.93–1.14)

 Maternal age

< 20

20–34

≥ 35

1.11 (0.98–1.27)

1

0.80 (0.73–0.87)

 

1.20 (1.06–1.38)*

1

0.77 (0.70–0.84)*

 Wealth index

Poor

Middle

Rich

1.45 (1.32–1.58)

1.07 (0.97–1.19)

1

 

1.37 (1.24–1.5)*

1.05 (0.95–1.17)

1

 Child sex

Male

Female

1.12 (1.06–1.20)

1

 

1.11 (1.05–1.19)*

1

 Birth size

Small

Average

Large

1.39 (1.28–1.51

1

1.27 (1.18–1.37)

 

1.34 (1.24–1.46)*

1

1.30 (1.20–1.40)*

 Media exposure

Yes

No

1

1.27 (1.18–1.36)

 

1

1.22 (1.13–1.31)*

 Toilet facility

Improved

Unimproved

1.02 (0.95–1.10)

1

 

0.95 (0.88–1.02)

1

 Water source

Improved

Unimproved

1

1.04 (0.97–1.12)

 

1

1.06 (1.01–1.14)*

 No of under-five

< 1

2–4

≥ 5

1.16 (0.97–1.39)

0.99 (0.84–1.18)

1

 

1.1 (0.96–1.16)

0.98 (0.93–1.12)

1

 Child age

0–11 months

12–23 months

24–59 months

1.25 (1.15–1.36)

1.59 (1.48–1.71)

1

 

1.23 (1.12–1.34)*

1.60 (1.47–1.72)*

1

 Birth order

First

Second

Third

Fourth & above

0.99 (0.89–1.10)

1.05 (0.93–1.17)

1.05 (0.94–1.17)

1

 

1.00 (0.90–1.12)

1.11 (0.99–1.24)

1.12 (1.00-1.36)

1

 Health insurance

Yes

No

1

1.46 (1.31–1.63)

 

1

1.60 (1.42–1.80)*

 Vaccination status

Vaccinated

Unvaccinated

1

1.45 (1.34–1.58)

 

1

1.45 (1.33–1.57)*

 Cocking fuel

Clean

Solid

0.89 (0.80–0.98)

1

 

0.86 (0.77–0.96)*

1

 Access to water

Basic access

Not basic access

0.97 (0.91–1.04)

1

 

1.02 (0.95–1.09)

1

Community level factors

 Residence

Urban

Rural

 

1

1.28 (1.25–1.31)

1

1.53 (1.51–1.75)*

 Distance to health facility

Big problem

Not big problem

 

1.04 (0.98–1.12)

1

1.06 (0.99–1.14)

1

 Countries income level

Low income

Lower middle

Upper middle

 

1.46 (1.42–1.5)

1.92 (1.89–2.01)

1

2.23 (1.80–2.73)*

1.96 (1.58–2.3)*

1

 Survey year

2015–2019

2020–2024

 

0.92 (0.89–0.95)

1

1.32 (1.22–1.42)*

1

 Region

Europe & American & Caribbean

South & south east Asian

Central Asia & the Oceania

Sub-Saharan Africa

 

1

1.55 (1.51–1.60)

1.44 (1.34–1.56)

1.6 (1.56–1.64)

1

1.60 (1.49–1.72)*

1.63 (1.49–1.81)*

1.35 (1.29–1.41)*

  1. *, statistically significant (p-value < 0.05), AOR: Adjusted Odds Ratio, CI: Confidence interval.