A specific set of Simmons data available here called "Simmons Connect" provides metrics of reach, time spent and activity involving consumer interaction with online and mobile technologies.
Some additional notes regarding the Simmons database:
Downtimes: Simmons software upgrades occur on Wednesdays - 9 PM ET - access restored as soon as possible, but Simmons reserves right to keep the system offline until 6 a.m. ET the following Thursday morning; System maintenance is also performed the first Saturday of each month between 10 a.m. and 3 p.m. ET.
See below for a link to a 61 page Simmons Insights User Guide PDF
Brief introduction to Simmons Insights (5 mins)
Detailed Introduction to Simmons Insights (29 mins)
This example assumes one has retrieved data or otherwise built a cross-tabulation using Simmons' adult survey (NHCS)
*Edit your citation accordingly to indicate the survey year one has actually used and/or to reflect instances when the data or cross tabulation comes from a survey (i.e., study) within Simmons of those other than adults (such as the “Simmons Connect” studies). For example: