Average Daily Allocation of Time among Different Activity Intensity Levels for Walkers – Seemingly Unrelated Regression with Robust Standard Errors.

Notes: (1) Estimations include a time trend and its square. (2) Standard errors are robust. (3) *, ** and *** indicate statistical significance at the 0.1, 0.05 and 0.01 levels, respectively. (4) “Had treadmill during the current week” is an indicator variable talking on the value of 1 when the walker had a treadmill in his or her office, and 0 when he or she did not have a treadmill in his or her office.

注释：
(1) 本次估计纳入了时间趋势项及其平方项。
(2) 标准误为稳健标准误。
(3) *、**、***分别代表在0.1、0.05和0.01的显著性水平下具有统计显著性。
(4) “当周拥有跑步机”为指示变量：当该步行者办公室内配有跑步机时取值为1，未配有跑步机时取值为0。