Table 5.
Marginal effects of age group and sex on the probability of time on Facebook.
| Variable | Stayed about the samea, respondent probability (95% CI) | P value | Increaseda, respondent probability (95% CI) | P value | Decreaseda, respondent probability (95% CI) | P value | ||
| Age group (years) |
|
|
|
|
|
|
||
|
|
18-29 | 0.43 (0.33-0.52) | <.001 | 0.08 (0.03-0.14) | .001 | 0.49 (0.40-0.58) | <.001 | |
|
|
30-49 | 0.49 (0.41-0.57) | <.001 | 0.15 (0.09-0.21) | <.001 | 0.36 (0.28-0.44) | <.001 | |
|
|
50+ | 0.66 (0.59-0.74) | <.001 | 0.10 (0.05-0.14) | <.001 | 0.24 (0.17-0.31) | <.001 | |
| Sex |
|
|
|
|
|
|
||
|
|
Male | 0.58 (0.50-0.65) | <.001 | 0.10 (0.05-0.14) | <.001 | 0.32 (0.26-0.39) | <.001 | |
|
|
Female | 0.51 (0.44-0.58) | <.001 | 0.12 (0.08-0.17) | <.001 | 0.37 (0.30-0.43) | <.001 | |
| Age group by sex (years) |
|
|
|
|
|
|
||
|
|
Male |
|
|
|
|
|
|
|
|
|
|
18-29 | 0.46 (0.36-0.56) | <.001 | 0.08 (0.03-0.13) | .003 | 0.46 (0.36-0.56) | <.001 |
|
|
|
30-49 | 0.53 (0.43-0.63) | <.001 | 0.13 (0.06-0.20) | <.001 | 0.34 (0.25-0.43) | <.001 |
|
|
|
Age 50+ | 0.70 (0.61-0.79) | <.001 | 0.08 (0.03-0.13) | .001 | 0.22 (0.14-0.30) | <.001 |
|
|
Female |
|
|
|
|
|
|
|
|
|
|
18-29 | 0.40 (0.29-0.51) | <.001 | 0.09 (0.03-0.15) | .003 | 0.51 (0.40-0.62) | <.001 |
|
|
|
30-49 | 0.46 (0.37-0.55) | <.001 | 0.16 (0.09-0.24) | <.001 | 0.38 (0.29-0.47) | <.001 |
|
|
|
50+ | 0.64 (0.55-0.72) | <.001 | 0.11 (0.05-0.16) | .001 | 0.26 (0.18-0.33) | <.001 |
aMarginal effects from multinomial logistic regression, adjusted for income, employment status, ethnicity, race, and education; 95% confidence intervals in parentheses.