Table 2.

Cox-Proportional Hazards Estimates of Screening Content Predicting Mental Health Outcomes

Attribute	Mental health self-diagnosis	Mental health self-references	Psychoactive medications	Sucicide intent	Suicide ideation	Seeking mental health care
Anxiety screening tool	1.485*	1.241*	1.074	1.259	1.297	1.109
Bipolar screening tool	1.482	1.245*	1.098	1.543	0.022	0.827
Depression screening tool	1.486*	1.240*	1.084	1.169	0.163	1.045
Eating disorder screening tool	1.496	1.341*	1.116	0.986	0.114	4.473*
Psychosis screening tool	1.268	1.118	1.074	1.270	0.562	1.224
PTSD screening tool	1.958*	1.162	1.097	1.220	0.405	1.416
Does this page contain screen?	0.752	0.952	0.869*	0.656	0.337	0.692
Does this page link to screen?	1.137	1.076	1.043	1.055	0.034	0.807
Suggestive diagnosis?	0.912	0.776*	0.916*	0.978	11.363	1.157
Is message provided?	1.267	1.397*	1.210	0.845	1.131	0.767
Internal digital treatment?	0.601	0.558	0.726*	0.361		0.171
Referrals to facilitate in-person patient care?	1.038	0.983	1.021	1.727*	4.569	0.716
Referrals to digital treatment (other than crisis referral)?	0.981	1.06	1.078	1.478	12.359	2.537
For digital treatment referrals, did referral involve human?	1.031	1.052	0.971	0.591	0.263	1.016
Referral to crisis services?	1.044	0.958	1.024	1.425	15.328	1.146
Time of the day	1.000	1.005	1.002	1.004	1.045	0.996
Day of the week	0.988	1.003	0.991*	1.061	1.124	0.965
MHA screener?	0.772	0.932	0.871	0.868	0.022	1.007
Previous searches	1.059*	1.003	1.005*	0.496		1.177

Note. This table depicts the hazard ratios for each respective outcome. Note that the hazards ratios reflect the effect of the given predictor on the outcome across time, such that hazards reflect the chance that the participant would search for a given mental health outcome at a later time. Each separate column depicts a separate outcome (mental health self-references, mental health self-diagnosis, seeking mental health care, psychoactive medications, suicidal intent, and suicidal ideation). The rows of this table each reflect the different multivariate predictors. The primary effects of interest were the screening content. For each outcome, we also controlled for the screening tool type (i.e. anxiety, bipolar, depression, eating disorder, psychosis, and posttraumatic stress disorder), the time of the day, the day of the week, the rate of prior searches for each outcome, and whether the screening tool was from the Mental Health America (the mental health screening domain with the largest user base). Stars denote statistically significant interactions (P<0.05, with Bonferroni correction). Note that blank rows were removed when they were invariant for non-censored outcomes.