General results indicated a medium positive effect size when comparing game-based learning to traditional instructional approaches (fixed effects model: Cohen's d = 0.674, CI = 0.550 to 0.797; random effects model: Cohen's d = 0.528, CI = 0.197 to 0.859).
In four trials reporting cardiorespiratory fitness, a medium positive effect at 12 months was non-significant (standardised mean difference 0.51, −0.18 to 1.20).
In 13 trials presenting self reported physical activity, we saw small to medium positive intervention effects at 12 months (odds ratio 1.42, 95% confidence interval 1.17 to 1.73; standardised mean difference 0.25, 0.11 to 0.38).
As medium shows positive effects on anammox process, many studies focused their attention on this area.
While this case study has highlighted some negative aspects of research conducted in the region, during this period there were also a number of valuable projects carried out that had short to medium term positive effects on health services.
20 A third study used a no intervention control, and found small to medium sized positive effects on self reported activity, which were significant for continuous (frequency of exercise sessions) but not dichotomous data (proportion of participants who had become more active from study entry).
The results of this meta-analytic study, consisting of 20 studies (31,369 participants), show that intensive family preservation programs had a medium and positive effect on family functioning (d = .486), but were generally not effective in preventing out-of-home placement.
The sand is a soil poor in nutrients and with a low content of organic matter (Table 2) and as such a growth medium in which positive effects of digestates are expected.
A medium-sized positive effect was observed in the ETG for the dimension vitality (mean, 0.52; 95% CI, 0.23 to 0.83; Figure 1).
Group interaction and seminar content had large (B = 0.418) and medium (B = 0.212) positive effects on perceived teaching performance scores, whereas the effects of students' preparation (B = -0.055) and group size (B = -0.130) were small and negative.
