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Research talk:Reading time/Work log/2019-01-02

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Wednesday, January 2, 2019

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Model selection update.

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I realized that in order to test the hypothesis that readers in the global south are most likely to read longer than readers in the global north in their sessions that we need to include the interaction term for in our model. Correspondingly we need to include in the version of the model with HDI.


Statistical models
model 2 model 3 model 4 model 5
Intercept 8.0375 (0.0083)*** 8.0276 (0.0083)*** 8.0188 (0.0083)*** 8.1658 (0.0084)***
mobile 0.1005 (0.0015)*** 0.1364 (0.0016)*** 0.1348 (0.0016)*** -0.1543 (0.0013)***
mobile : Global South -0.1396 (0.0024)*** -0.1490 (0.0024)*** -0.1957 (0.0024)***
mobile : Last in Session -0.6486 (0.0021)*** -0.6415 (0.0021)*** -0.6349 (0.0021)***
Global South : Last in Session -0.0830 (0.0024)*** -0.1455 (0.0024)***
Revision length (bytes) 0.1762 (0.0004)*** 0.1758 (0.0004)*** 0.1758 (0.0004)*** 0.1762 (0.0004)***
time to first paint -0.0171 (0.0006)*** -0.0172 (0.0006)*** -0.0171 (0.0006)*** -0.0165 (0.0006)***
time to dom interactive 0.0022 (0.0009)* 0.0023 (0.0009)** 0.0024 (0.0009)** 0.0030 (0.0009)***
sessionlength -0.0001 (0.0000)*** -0.0001 (0.0000)*** -0.0001 (0.0000)*** -0.0001 (0.0000)***
lastinsessionTRUE 0.9258 (0.0015)*** 0.9205 (0.0015)*** 0.9406 (0.0016)*** 0.6437 (0.0013)***
nthinsession 0.0002 (0.0000)*** 0.0002 (0.0000)*** 0.0002 (0.0000)*** 0.0002 (0.0000)***
dayofweekMon 0.0925 (0.0020)*** 0.0925 (0.0020)*** 0.0926 (0.0020)*** 0.0991 (0.0020)***
dayofweekSat 0.0196 (0.0020)*** 0.0178 (0.0020)*** 0.0175 (0.0020)*** 0.0112 (0.0020)***
dayofweekSun 0.0350 (0.0020)*** 0.0335 (0.0020)*** 0.0332 (0.0020)*** 0.0281 (0.0020)***
dayofweekThu 0.0552 (0.0019)*** 0.0550 (0.0019)*** 0.0548 (0.0019)*** 0.0530 (0.0020)***
dayofweekTue 0.0332 (0.0020)*** 0.0331 (0.0020)*** 0.0326 (0.0020)*** 0.0306 (0.0020)***
dayofweekWed 0.0748 (0.0019)*** 0.0745 (0.0019)*** 0.0743 (0.0019)*** 0.0713 (0.0019)***
usermonth4 0.0085 (0.0096) 0.0084 (0.0096) 0.0083 (0.0096) 0.0089 (0.0096)
usermonth5 0.0110 (0.0095) 0.0106 (0.0095) 0.0104 (0.0095) 0.0123 (0.0096)
usermonth6 -0.0100 (0.0097) -0.0102 (0.0097) -0.0103 (0.0097) -0.0082 (0.0098)
usermonth7 -0.0487 (0.0097)*** -0.0491 (0.0097)*** -0.0491 (0.0097)*** -0.0476 (0.0098)***
usermonth8 -0.0115 (0.0097) -0.0121 (0.0097) -0.0121 (0.0097) -0.0098 (0.0097)
usermonth9 0.0366 (0.0076)*** 0.0369 (0.0076)*** 0.0370 (0.0076)*** 0.0408 (0.0076)***
usermonth10 0.0029 (0.0075) 0.0013 (0.0075) 0.0010 (0.0075) -0.0049 (0.0075)
GlobalSouthTRUE 0.1466 (0.0012)*** 0.2214 (0.0017)*** 0.2680 (0.0022)*** 0.3329 (0.0022)***
R2 0.0720 0.0724 0.0725 0.0641
Adj. R2 0.0720 0.0724 0.0725 0.0641
Num. obs. 9873641 9873641 9873641 9873641
RMSE 14.2331 14.2306 14.2297 14.2940
***p < 0.001, **p < 0.01, *p < 0.05