Attending a school with a strong active policy also reduced the odds of prescribing lisdexamfetamine (adjusted odds ratio 0.40, 0.18 to 0.88; P=0.02; table 4), which is slightly smaller than the odds ratio reported in the main analysis.
The odds ratios reported in this paper should not be taken at face value for at least two reasons.
Next, we calculated our statistical power to detect an association of a risk allele with the odds ratio reported in the previous study that investigated the association of rs2511989 with developing AMD.
Our sample size had a statistical power of more than 90% to detect an association of a risk allele with an odds ratio reported in the original studies for rs2511989 for developing AMD.
The multivariable-adjusted HR or odds ratios reported in the eligible studies were extracted and considered directly as RR in our analysis.
The spread of the odds ratios reported in the individual studies were larger than can be expected by chance alone (I= 87.6%).
In particular, the odds ratios reported in Table 3 indicate that for a unit increase in the FCT score, holding all other variables constant, the odds of accepting WHOMS increased by 173%, indicating a very strong relationship.
The second used the original odds ratios reported in the studies, to check for bias in the conversion process, and again showed a significant negative effect of non-white ethnicity on performance (P<0.001, odds ratio 2.92, 1.88 to 4.55; I=83%).
Since the multilevel modeling showed clustering effect in most of the items, the final odds ratios reported in the Table 2 are from the multi-level model, rather than those from single level logistic function.
For example, TCF7L2, the most commonly studied gene in the collected data set, was covered by 45 GWAS, with up to a 3.4 odds ratio reported in a Finnish study [ 35].
The odds ratios reported in the individual studies were not associated with type of study design (cohort vs. case-control) and method of diagnosis of placenta previa (data record in database vs. confirmation at delivery).
