Figure 1. Voting results.

Panel members used the following sentence to generate their individual vote for Rounds 1 and 2 on each subcategory (when necessary), category and each hour range of sleep: “Based on the available evidence, [X] hours of sleep is associated with optimal health within the [X] subcategory in the [X] category.” Choice options ranged from 1–9 with 1 = “Strongly Disagree,” 5 = “Neither Agree nor Disagree,” and 9 = “Strongly Agree.” Round 1 voting (A) occurred without influence from other Panel members, Round 2 voting (B) occurred at the face-to-face meeting in Chicago after category content expert presentations and group discussion, final consensus statement voting (C) occurred after group discussion and review of the Round 2 voting results. Consensus statement voting involved panel members using the following modified sentence to generate their vote: “Based on the available evidence, [X] hours of sleep is associated with optimal adult health.” In regards to color coding of the figure, if there was consensus among the panel that < 5 hours of sleep was not associated with, for example, cardiovascular health, the relevant area in Figure 1 would be colored red (e.g., the panel reached consensus that it feels the following statement is inappropriate: “Based on the available evidence, < 5 hours of sleep is associated with optimal health within the hypertension subcategory within the cardiovascular health category”). For expository purposes, subcategories were collapsed to provide overall category specific results. A vertical line was placed on the figures to denote the 7 hour mark.