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Table 5 Longitudinal modeling of meeting physical activity recommendation using generalized estimating equation

From: A RCT to evaluate a totally automated, culturally-adapted telephone counselor for increasing physical activity among physically inactive individuals in China

  Non-interaction model Interaction model
  OR 95% CI p-value OR 95% CI p-value
TLC-PA-China 7.34 (4.164, 12.927) < 0.001 8.39 (2.792, 25.200) < 0.001
Time (months) 1.53 (1.431, 1.641) < 0.001 1.57 (1.293, 1.900) < 0.001
TLC-PA-China*Time 0.97 (0.793, 1.193) NS
Baseline MOD+PA 1.01 (1.004, 1.018) 0.003 1.01 (1.004, 1.018) 0.003
Gender 1.23 (0.702, 2.145) NS 1.23 (0.701, 2.141) NS
Age 1.02 (0.985, 1.065) NS 1.02 (0.985, 1.065) NS
  1. Study was conducted at Shenzhen, China between July and August 2009
  2. NS: Not significant at α = 0.05
  3. Note Results are estimated for a binary outcome with logit link function and exchangeable working correlations
  4. The asterisks indicate which variables are involved in the interaction