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Table 2 Mediation of self-care behaviors between diabetes knowledge and glycemic control in low-income patients with type 2 diabetes mellitus from Mexico City (n=513).

From: Influence of social determinants, diabetes knowledge, health behaviors, and glycemic control in type 2 diabetes: an analysis from real-world evidence

Diabetes knowledge

X → Y (c path)a,h

           

β

95% CI

           

Crude analysis

-0.10

(-0.19, -0.01)

           
 

X → Y (c' path) directb,h

X → M (a path)c,h

M → Y (b path)d,h

Indirect effect (a*b)e,g

Proportion mediatedf

 

β

95% CI

β

95% CI

β

95% CI

β

95% CI

β

95% CI

Self-care behavior

 Diet

         

(-0.30, 0.87)

  Specific

-0.11

(-0.02, -0.19)

0.13

(0.06, 0.21)

0.06

(-0.04, 0.17)

0.01

(0.00, 0.03)

-0.11

(-0.64, 0.04)

  Global

-0.09

(-0.17, 0.02)

0.18

(0.09, 0.26)

-0.09

(-0.10, 0.00)

-0.01

(-0.03, 0.00)

0.13

(-0.05, 0.75)

  Total

-0.10

(-0.12, 0.11)

0.15

(0.09, 0.22)

-0.03

(-0.15, 0.08)

0.00

(-0.02, 0.02)

0.01

(-0.27, 0.34)

 Physical activity, days a week

-0.08

(-0.18, 0.01)

0.18

(0.09, 0.27)

-0.11

(-0.19, -0.03)

-0.02

(-0.04, 0.00)

0.17

(0.01, 0.85)

 Blood sugar testing, days a week

-0.10

(-0.06, 0.12)

0.13

(0.04, 0.22)

0.02

(-0.07, 0.10)

0.00

(-0.01, 0.02)

-0.04

(-0.43, 0.19)

 Foot care, days a week

-0.09

(-0.07, 0.06)

0.40

(0.28, 0.53)

-0.02

(-0.08, 0.04)

0.00

(-0.03, 0.02)

0.02

(-0.60, 0.49)

 Self-care global score, days a week

-0.09

(-0.19, 0.07)

0.23

(0.17, 0.28)

-0.10

(-0.22, 0.03)

-0.01

(-0.05, 0.02)

0.13

(-0.30, 0.87)

  1. a c path (total effect): The crude association between diabetes knowledge and glycemic control.
  2. b c' path (direct effect): the association between diabetes knowledge and glycemic control, adjusted for mediator (self-care behavior)
  3. c a path: association between diabetes knowledge and self-care behavior
  4. d b path: association between self-care behavior and glycemic control
  5. e Indirect effect (a*b): the indirect effect of the diabetes knowledge on glycemic control through self-care behavior
  6. f Proportion effect mediated ((a*b)/c): the proportion of the total effect mediated through self-care behavior
  7. g Confidence interval for indirect effects were calculated with bootstrapping (5000 samples)
  8. h All analyses used linear regression models adjusted for age, sex, years since diagnosis, and SES