International Scholarly Research Notices / 2012 / Article / Tab 2

Research Article

Time in Bed Is Associated with Decreased Physical Activity and Higher BMI in Women Seeking Weight Loss Treatment

Table 2

Differences in average BMI and Paffenbarger physical activity score between sleep duration groups ( ).

Sleep duration groupsBMIPaffenbarger PA
Difference (kg/m2)a95% CI valuePercent reductionb95% CI value

≤6 h/night2.2 0.1–4.30.0454.6 0.0, 79.40.05
>6 to ≤7 h/night−0.2−1.8, 1.4NS40.4−11.1, 68.00.10
>7 to ≤8 h/night refrefrefrefrefref
>8 to ≤9 h/night0.1 −1.5, 1.7NS34.7−21.0, 64.8NS
>9 h/night0.6 −1.4, 2.6NS45.8 −17.7, 75.0NS

Note. Findings adjust for race, education, suspected apnea, age, urinary incontinence, BDI score, and alcohol use.
aDifference in BMI. bBack transformed.