Table 6.
Results from the linear regression model predicting number of pageviews on MedlinePlus English; * p value significant at the 0.05 level
† p value for the overall contribution of the factor to the model including interaction effect
| Predictor | Coefficients | p value | Increase in predictor value | Value of other interaction predictors | % change in number of MedlinePlus English pageviews per increase in predictor | 95% CI for prediction of % change in number of MedlinePlus English page-views | p value |
|---|---|---|---|---|---|---|---|
| Intercept | 5.85561 | <0.001* | - | - | |||
| English-speakers (%) | -0.03713 | 0.0026*t | 10% | Literacy 10% Literacy 50% Literacy 90% | -26.9 -7.9 16.1 | [-50.6, 8.1] [-24.6, 12.5] [5.9, 27.3] | 0.1146 0.4165 0.0018* |
| GDP per capita (USD) | 0.00002 | 0.2338 | $1,000 | 1.6 | [-1.0,4.4] | 0.2338 | |
| Literacy (%) | 0.03241 | <0.001*t | 10% | English 10% English 50% English 90% | 46.5 84.6 132.7 |
[13.7,88.8] [46.0,133.5] [62.9, 232.5] | 0.0036* <0.001* <0.001* |
| Internet users (%) | 0.02005 | 0.0265* | 10% | 22.2 | [2.4, 45.8] | 0.0265* | |
| Medical schools (per million) | 0.03280 | 0.0039* | 1 school per million | 3.3 | [1.1,5.6] | 0.0039* | |
| Physicians (per 1000) | -0.15153 | 0.2658 | 1 physician per 1000 | -14.1 | [-34.3,12.4] | 0.2658 | |
| Interaction between English-speakers and literacy | 0.00058 | 0.0251* |