For every extra hour of TV the children took in, they tended to sleep about 7 minutes less per night on average.
Every extra hour per day of television watching added about a third of a pound, perhaps by encouraging snacking.
The estimates from the sensitivity analyses were also statistically significant; 22% per extra hour according to the pooled ARIMA estimates, and 13% per extra hour for the change model.
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Thomas O'Brien, a thermostat repairer in Queens, made $83,519 for working 638 hours of overtime – that means he made $131 per extra hour!
In a 4-year longitudinal study Dietz and Gortmaker found a dose response relationship of about 0.6% increase in obesity prevalence per extra hour of TV, after correcting for past obesity and several socio-economic characteristics.
In a study, Dr Corder and colleagues looked at the leisure habits of 845 children aged, on average, 14.5 and found that an extra hour per day spent watching TV, playing games and browsing online is "associated" with poorer GCSE grades at age 16. "The difference can be eight or nine GCSE points," said Dr Corder.
On average, they put in an extra hour per day – stacking up to about an additional day of work each week.
Adult reading time was also a significant predictor (p = 0.048), with an extra hour per week predicting an increase of 60 × 0.050 = 3.00 points ([0.03 5.94], 3.26%).
The marginal effect on the Total Language score of an extra hour per week of adult time spent reading to the child was an increase of 60 × 0.096 = 5.76 points ([1.33 10.17], 6.64%).
Overall, the majors enrolled in the coseminar did not perform significantly better than those not enrolled in the coseminar, suggesting that the extra hour per week spent in coseminar is not the only variable affecting performance (t test, p > 0.05 in all cases).
