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Table 5 Multinomial logistic regression analysis for the associations of intellectual activities and social activities with the membership to cognitive function trajectory group

From: Associations between social and intellectual activities with cognitive trajectories in Chinese middle-aged and older adults: a nationally representative cohort study

  Persistently low (vs persistently high) Persistently moderate (vs persistently high)
OR (95% CI)* p value OR (95% CI)* p value
Global cognitive scores
 Social activity scores
  0 1.00 (reference)   1.00 (reference)  
  1–2 0.77 (0.63–0.94) 0.011 0.84 (0.73–0.97) 0.020
  ≥ 3 0.79 (0.65–0.95) 0.011 0.76 (0.66–0.87) < 0.001
 Intellectual activity scores
  0 1.00 (reference)   1.00 (reference)  
  1–2 0.49 (0.39–0.63) < 0.001 0.78 (0.67–0.90) 0.001
  ≥ 3 0.54 (0.38–0.77) 0.001 0.62 (0.50–0.77) < 0.001
Mental intactness scores
 Social activity scores
  0 1.00 (reference)   1.00 (reference)  
  1–2 0.90 (0.72–1.12) 0.334 0.93 (0.80–1.07) 0.309
  ≥ 3 0.93 (0.76–1.15) 0.513 0.81 (0.71–0.93) 0.004
 Intellectual activity scores
  0 1.00 (reference)   1.00 (reference)  
  1–2 0.41 (0.31–0.55) < 0.001 0.74 (0.63–0.86) < 0.001
  ≥ 3 0.45 (0.28–0.71) 0.001 0.75 (0.60–0.95) 0.017
Episodic memory scores
 Social activity scores
  0 1.00 (reference)   1.00 (reference)  
  1–2 0.58 (0.47–0.73) < 0.001 0.67 (0.56–0.81) < 0.001
  ≥ 3 0.60 (0.49–0.74) < 0.001 0.72 (0.60–0.85) < 0.001
 Intellectual activity scores
  0 1.00 (reference)   1.00 (reference)  
  1–2 0.76 (0.60–0.97) 0.026 0.98 (0.81–1.20) 0.863
  ≥ 3 0.42 (0.31–0.59) < 0.001 0.67 (0.54–0.84) < 0.001
  1. OR odds ratio, 95% CI 95% confidence intervals
  2. *Adjusted for age at baseline (continuous), sex (male, female), education (no formal education, primary school, middle or high school, college or above), marital status (married, others), residence (urban, rural), household income (low, medium, high), smoking (yes, no), drinking (yes, no), body mass index (< 18.5, 18.5–23.9, 24.0–27.9, ≥ 28.0 kg/m2), self-report of health (good, fair, poor), comorbidity (0, 1, ≥ 2), depressive symptoms (yes, no), restriction on activities of daily living (yes, no), visual impairment (yes, no), and hearing impairment (yes, no)