Table 3.
Effect size estimation
Child Mitochondrial Measures | Low Maternal Allostatic Load | High Maternal Allostatic Load | Cohen’s D effect size (median AL split) | Correlation with Maternal Allostatic Load r (p-value) | ||||
---|---|---|---|---|---|---|---|---|
Mean | SD | N | Mean | SD | N | |||
| ||||||||
CS | 111.2 | 26.4 | 15 | 142.2 | 48.9 | 15 | 0.789 | 0.47 (0.009) |
mtDNAcn | 368.4 | 80.1 | 15 | 446.4 | 128.6 | 15 | 0.729 | 0.44 (0.014) |
Complex I | 8.6 | 2.9 | 15 | 11 | 3.4 | 15 | 0.766 | 0.43 (0.019) |
Complex II | 53.7 | 20.3 | 15 | 75.7 | 33.1 | 15 | 0.802 | 0.46 (0.011) |
Complex IV | 14.2 | 4.2 | 15 | 19.1 | 7 | 15 | 0.854 | 0.48 (0.008) |
Maternal allostatic load was divided into a “high” and “low” allostatic load (by a median split), and a Cohen’s D effect size was calculated to examine the magnitude of the relationship between high vs. low maternal allostatic load and offspring mitochondrial content and mitochondrial bioenergetic capacity (enzymatic activity indexed per cell). Additionally, the Pearson correlation (r) with p-value was calculated to further examine the magnitude of the linear association between maternal allostatic load and mitochondrial content, and mitochondrial bioenergetic capacity (enzymatic activity indexed per cell). AL= maternal allostatic load; CS= citrate synthase; mtDNAcn= mitochondrial DNA copy number; CI= complex I; CII= complex II; CIV= complex IV.