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Table 3 Results of the GLMM including the following fixed factors: reproductive status (factorial variable: nulliparous = 0; pregnant = 1), social bond linking trigger and potential responder (factorial variable: strangers = 0; acquaintances = 1), time period (factorial variable coded as follow: 09:00am–12:30 pm = 1; 12:30–16:00 pm = 2; 16:00–19:30 pm = 3; 19:30–23:00 pm = 4). The coded identity of trigger and potential responder were entered as random factors

From: Yawning Is More Contagious in Pregnant Than Nulliparous Women

  Estimate SE z p
(Intercept)a  − 7.115 2.152 a a
Reproductive status (1)b,c     4.650 1.745   2.664 .008
Bond (1)b,c     4.150 1.792   2.315 .021
Time period (2)b,c     1.009 0.869   1.161 .246
Time period (3)b,c     0.719 1.244   0.578 .563
Time period (4)b,c  − 1.572 1.342 −1.172 .241
  1. Full vs. null model: χ2 = 11.183, df = 5, p = .048)
  2. a Not shown as not having a meaningful interpretation
  3. b Estimate ± SE refer to the difference of the response between the reported level of this categorical predictor and the reference category of the same predictor
  4. c These predictors were dummy coded, with Reproductive status (0), Bond (0), and Time period (1) being the reference categories