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Table 3 Unstandardized Parameter Estimates (with Standard Errors) for Conditional Multi-Group LGCMs

From: A latent growth curve model to estimate electronic screen use patterns amongst adolescents aged 10 to 17 years

Grade and Parameter Estimate Measure of screen use
Overall Social Networking Gaming Web Passive
Grade 5
Intercept 2.77 (0.11)*** 0.70 (0.08)*** 2.32 (0.11)*** 1.29 (0.08)*** 2.19 (0.09)***
Slope 0.05 (0.06) 0.12 (0.05)** −0.20 (0.06)** 0.00 (0.04) − 0.11 (0.05)
Intercept* Sex −0.08 (0.17) 0.15 (0.12) −0.58 (0.16)*** 0.12 (0.12) 0.22 (0.15)
Slope* Sex 0.02 (0.09) 0.14 (0.07) − 0.17 (0.09) 0.01 (0.06) − 0.02 (0.07)
Intercept/Slope −0.55 (0.16)** −0.03 (0.09) − 0.65 (0.16)*** −0.12 (0.12) − 0.15 (0.12)
Grade 7
Intercept 3.17 (0.11)*** 1.13 (0.10)*** 2.06 (0.11)*** 1.38 (0.09)*** 2.26 (0.10)***
Slope 0.24 (0.06)*** 0.13 (0.05)** −0.11 (0.06) 0.10 (0.05) 0.01 (0.06)
Intercept* Sex 1.26 (0.17)*** 1.11 (0.18)*** −0.71 (0.15)*** 0.76 (0.14)*** 0.83 (0.16)***
Slope* Sex −0.18 (0.09) 0.14 (0.08) −0.26 (0.08)** −0.09 (0.08) − 0.11 (0.09)
Intercept/Slope −0.45 (0.13)*** − 0.50 (0.18)** −0.48 (0.15)** − 0.40 (0.14)** −0.46 (0.16)**
Grade 9
Intercept 3.93 (0.12)*** 1.74 (0.12)*** 2.09 (0.12)*** 1.67 (0.09)*** 2.44 (0.11)***
Slope 0.14 (0.07) 0.18 (0.07) −0.17 (0.07) 0.16 (0.07) −0.00 (0.07)
Intercept* Sex 1.73 (0.18)*** 1.35 (0.21)*** −1.08 (0.16)*** 0.86 (0.16)*** 1.03 (0.17)***
Slope* Sex −0.39 (0.10)*** −0.24 (0.10) 0.08 (0.10) −0.15 (0.10) − 0.21 (0.11)
Intercept/Slope −0.56 (0.15)*** − 0.82 (0.21)*** −0.61 (0.20)** − 0.61 (0.19)** −0.43 (0.16)**
  1. ** = p < .01; *** = p < .001
  2. Footnote: Reference group for sex is male