Sentences with phrase «significant effect over time»

Not exact matches

Individual growth curve models were developed for multilevel analysis and specifically designed for exploring longitudinal data on individual changes over time.23 Using this approach, we applied the MIXED procedure in SAS (SAS Institute) to account for the random effects of repeated measurements.24 To specify the correct model for our individual growth curves, we compared a series of MIXED models by evaluating the difference in deviance between nested models.23 Both fixed quadratic and cubic MIXED models fit our data well, but we selected the fixed quadratic MIXED model because the addition of a cubic time term was not statistically significant based on a log - likelihood ratio test.

Fever over 100.4 º F (38º C) during labor is five times more likely overall for women using an epidural; 44 this rise in temperature is more common in women having their first babies, and more marked with prolonged exposure to epidurals.45 For example, in one study, 7 percent of first - time mothers laboring with an epidural were feverish after six hours, increasing to 36 percent after 18 hours.46 Maternal fever can have a significant effect on the baby (see below).

This means that even small sleep changes, over time, will have significant negative effects.

The human species is essentially homogeneous from a genetic perspective, however, the various groups have some subtle but significant differences at statistical and scientific level that have developed over time due to the effect of geographical, demographic and cultural factors» says Valentina Coia.

Over time, this has a significant effect on the composition of the local neighbourhood and makes the area less affordable for poorer families.

And sugar also has effects in suppressing the immune system, where they looked at vitamin C absorption or vitamin C activation over time period and you can see that you have significant immune decrease when you're consuming refined sugar especially excess amounts refined sugar.

This explains why regular coffee drinkers build up a tolerance over time — because you have more adenosine receptors, it takes more caffeine to block a significant proportion of them and achieve the desired effect.

Individually, the effects of each refinement may be slight, but collectively, they become significant over time.

There was a significant time - pulse dose group interaction effect on average daily satiety ratings, where satiety ratings were highest in the group receiving 0.5 c / d, particularly over the first 3 wk.

Its Groundhog Day style time traveling mechanics still feel fresh, and with the same three days reoccurring over and over, there's significant replay value through its Butterfly Effect variations.

The effect is initially subtle but the cumulative impact is significant, particularly over time.

These types of loans can result in significant savings as long as the person does not default on any payments for the loan as the interest rate will remain the same over the entire time the loan agreement is in effect.

We show that, indeed, movies have had a significant impact on dog breed popularity in the U.S.A., sometimes influencing sales of featured breeds for a decade or more, but also that their effect has been declining over time.

If your dog nibbles and gnaws on a rawhide over a significant amount of time, there may be some debriding effect.

Its Groundhog Day style time traveling mechanics still feel fresh, and with the same three days reoccurring over and over, there's significant replay value through its Butterfly Effect variations.

As to the 500 million year assessment, there was no significant ice for most of the time and any temporary effect is averaged out over the eons.

Paper J notes that the anthropogenic effect on sea level rise in one region of the world (the Pacific Ocean) over one period of time (1993 - 2013) is too small to detect at a statistically significant level due to factors such as: a) small sample size (only 20 years), b) the effect of control variables (such as the IPO), c) limitations of satellite altimetry measurement, the technique being used to measure sea level in paper H. Paper K offers a contrasting account of paper J, noting that part of the Pacific sea level rise is anthropogenic.

I have already made it clear elsewhere that the additional resistor effect of human CO2 would be insignificant in relation to that from the rest of the air and the oceans together with the varying solar and oceanic heating and cooling effects but we still need to know for sure whether it is significant at all over periods of less than several hundred years because that may be the time we need to solve our energy, pollution, resource and population problems.

Must be some significant cause and effect to saltier brine water melting and re-freezing every year and sinking into the thermocline that affects ocean currents over long term time scales.

The significant decline in the δ13C of limpets over the three time points provides evidence counter to a food web shift hypothesis (Fig 3a, linear mixed effects model, time coefficient = − 0.206, p = 0.009, n = 5).

Conversely, many studies over time have demonstrated just the opposite: nonshared environments, or surroundings unique to each individual, have more significant effects on the likelihood that depressive symptoms will occur.

PREP appears to have a significant effect on marital satisfaction initially, but the effect appears to fade over time (Gottman, 1979), and there is some indication that it improves communication among high - risk couples but not low - risk couples (Halford, Sanders, and Behrens, 2001).

Although the indirect effect was small, Abelson (1985) argues that small effect can have a significant impact if the observed effect occurs over time.

Post-hoc analysis indicated that only the HAPA - enhanced group exhibited a significant main effect of time, with a medium effect size of significant increase in life satisfaction over time, F1.45, 150.79 = 9.97, partial eta square = 0.09, P <.001.