Table 1 Bivariate analyses of covariates and mediators with cognition as dependent variable

Gender

Male

27.66(0.04)

t=60.28

<0.001

Female

24.53(0.04)

Age

r=-0.26

<0.001

Residence

Rural

24.43(0.03)

t=-74.67

<0.001

Urban

28.38(0.04)

Education

Years of schooling

r=0.63

<0.001

Religion

Hindu

25.97(0.03)

t=-6.12

<0.001

Others

25.60(0.05)

Marital status

Currently married

26.63(0.03)

t=-53.29

<0.001

Not married

23.12(0.06)

Caste

SC/ST

24.24(0.05)

t=43.52

<0.001

Others

26.68(0.03)

MPCE

Poorest

24.06(6.7)

F=567.90

<0.001

Poorer

25.04(6.66)

Middle

25.78(6.77)

Richer

26.58(6.7)

Richest

27.74(6.72)

Indoor air pollution

IP1

r=-0.23

<0.001

IP2

r= -0.18

<0.001

IP3

r=-0.17

<0.001

Depression (M1)

r=-0.16

<0.001

Sleep problems (M2)

r=-0.12

<0.001