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. 2015 Jan 23;15:21. doi: 10.1186/s12879-014-0691-0

Table 1.

Summary statistics for daily percentage deviation from the long-run mean ATV (Δ t) for various demographic groups

Statistics for Δ t within the intervention period (τ)
Group Range Mean Mean = 0 (p-value) Equal means within class (p - value)
Aggregate [−1.4%, 22.6%] 13.6% <0.001 .
Age class Children [−4.7%, 46.2%] 23.7% <0.001 0.001
Adults [−6.5%, 21.8%] 8.9% <0.001
SEL class Low [−0.2%, 32.0%] 17.8% <0.001 Low-med: 0.23
Medium [0.4%, 32.1%] 15.3% <0.001 Med-high: 0.51
High [−3.0%, 21.6%] 11.8% <0.001 Low-high: 0.04
Time of day Daytime [−3.7%, 30.7%] 18.4% <0.001 0.005
Nighttime [−4.1%, 17.0%] 9.6% <0.001