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Table 5 Standardized coefficients for measurement and structural models

From: Prospective associations between pulse pressure and cognitive performance in Chinese middle-aged and older population across a 5-year study period

Models

Parameters

Coefficients

Z value

Goodness-of-fit indices

Measurement models

   

χ2(1) = 35.1, P < 0.001, CFI = 0.99, TLI = 0.98, SRMR = 0.01; RMSEA = 0.06 (0.04–0.08)

Trajectory of PP

Intercept

55.13a

357.75

Slope

− 0.07

− 0.91

Trajectory of cognitive score

Intercept

10.48a

241.29

χ2(1) = 91.6, P < 0.001, CFI = 0.99, TLI = 0.97, SRMR = 0.02; RMSEA = 0.09 (0.08–0.10)

Slope

− 0.28a

− 13.91

Structural models

    

Unconditional model

PP intercept → cog intercept

− 0.25a

17.28

χ2(8) = 125.8, P < 0.001, CFI = 0.99, TLI = 0.99, SRMR = 0.02; RMSEA = 0.04 (0.03–0.05)

PP intercept → cog slope

− 0.16a

− 3.53

PP slope → cog slope

− 0.06

− 0.66

Conditional modelb

PP intercept → cog intercept

− 0.04a

− 2.56

χ2(68) = 285.5, P < 0.001, CFI = 0.99, TLI = 0.98, SRMR = 0.01; RMSEA = 0.02 (0.02–0.02)

PP intercept → cog slope

− 0.10

− 1.34

PP slope → cog slope

− 0.07

− 0.63

  1. Abbreviations: CFI Comparative fit index, Cog Cognition, PP Pulse pressure, RMSEA Root mean square error of approximation, SRMR Standardized root mean square residual, TLI Tucker-Lewis index
  2. aStatistical significance
  3. bAdjusted for age, sex, body mass index, education level, marital status, smoking, alcohol use, hukou status, living status and health status before age 16, hypertension, diabetes or high blood sugar, psychiatric problems, memory-related disease, stroke, glucose, glycosylated hemoglobin, total cholesterol, activities of daily living, and depression symptoms