| All data | fMRI | Behaviour | Difference | ||||||
| Study site | N | Trait anxiety (±s.d.) | N | Trait anxiety (±s.d.) | N | Trait anxiety (±s.d.) | t | P | Effect size (d) |
| Site #1 | 255 | 38.35 (±11.19) | 155 | 36.08 (±10.16) | 100 | 41.85 (±11.84) | 4.01 | <0.001 | 0.53 |
| Site #2 | 102 | 43.38 (±10.91) | 0 | – | 102 | 43.38 (±10.91) | – | – | – |
| Site #3 | 890 | 36.12 (±7.90) | 465 | 34.68 (±7.75) | 425 | 37.69 (±7.78) | 5.79 | <0.001 | 0.39 |
| Site #4 | 71 | 34.31 (±7.35) | 0 | – | 71 | 34.31 (±7.35) | – | – | – |
| Site #5 | 100 | 35.95 (±8.13) | 45 | 35.31 (±7.88) | 55 | 36.47 (±8.37) | 0.71 | 0.48 | 0.14 |
| Site #6 | 440 | 39.30 (±6.95) | 413 | 39.26 (±6.96) | 27 | 39.81 (±6.93) | 0.40 | 0.69 | 0.08 |
| Site #7 | 94 | 29.66 (±5.71) | 61 | 29.02 (±5.32) | 33 | 30.85 (±6.29) | 1.42 | 0.16 | 0.32 |
| Site #8 | 441 | 34.28 (±9.40) | 55 | 33.84 (±9.56) | 386 | 34.34 (±9.39) | 0.37 | 0.72 | 0.053 |
| Site #9 | 924 | 38.02 (±10.53) | 147 | 32.78 (±8.12) | 777 | 39.01 (±10.65) | 8.09 | <0.001 | 0.61 |
| All data | fMRI | Behaviour | Difference | ||||||
| Study site | N | Trait anxiety (±s.d.) | N | Trait anxiety (±s.d.) | N | Trait anxiety (±s.d.) | t | P | Effect size (d) |
| Site #1 | 255 | 38.35 (±11.19) | 155 | 36.08 (±10.16) | 100 | 41.85 (±11.84) | 4.01 | <0.001 | 0.53 |
| Site #2 | 102 | 43.38 (±10.91) | 0 | – | 102 | 43.38 (±10.91) | – | – | – |
| Site #3 | 890 | 36.12 (±7.90) | 465 | 34.68 (±7.75) | 425 | 37.69 (±7.78) | 5.79 | <0.001 | 0.39 |
| Site #4 | 71 | 34.31 (±7.35) | 0 | – | 71 | 34.31 (±7.35) | – | – | – |
| Site #5 | 100 | 35.95 (±8.13) | 45 | 35.31 (±7.88) | 55 | 36.47 (±8.37) | 0.71 | 0.48 | 0.14 |
| Site #6 | 440 | 39.30 (±6.95) | 413 | 39.26 (±6.96) | 27 | 39.81 (±6.93) | 0.40 | 0.69 | 0.08 |
| Site #7 | 94 | 29.66 (±5.71) | 61 | 29.02 (±5.32) | 33 | 30.85 (±6.29) | 1.42 | 0.16 | 0.32 |
| Site #8 | 441 | 34.28 (±9.40) | 55 | 33.84 (±9.56) | 386 | 34.34 (±9.39) | 0.37 | 0.72 | 0.053 |
| Site #9 | 924 | 38.02 (±10.53) | 147 | 32.78 (±8.12) | 777 | 39.01 (±10.65) | 8.09 | <0.001 | 0.61 |
Notes: Sample sizes and mean trait anxiety scores (±s.d.) are reported for each site, for all data and separately for the fMRI and behavioural study contexts. Statistics for the difference between fMRI and behaviour contexts are also reported in the right-most column, specifically t and P-values from two-tailed independent sample t-tests (unequal variance) and effect size using Cohen’s d.
| All data | fMRI | Behaviour | Difference | ||||||
| Study site | N | Trait anxiety (±s.d.) | N | Trait anxiety (±s.d.) | N | Trait anxiety (±s.d.) | t | P | Effect size (d) |
| Site #1 | 255 | 38.35 (±11.19) | 155 | 36.08 (±10.16) | 100 | 41.85 (±11.84) | 4.01 | <0.001 | 0.53 |
| Site #2 | 102 | 43.38 (±10.91) | 0 | – | 102 | 43.38 (±10.91) | – | – | – |
| Site #3 | 890 | 36.12 (±7.90) | 465 | 34.68 (±7.75) | 425 | 37.69 (±7.78) | 5.79 | <0.001 | 0.39 |
| Site #4 | 71 | 34.31 (±7.35) | 0 | – | 71 | 34.31 (±7.35) | – | – | – |
| Site #5 | 100 | 35.95 (±8.13) | 45 | 35.31 (±7.88) | 55 | 36.47 (±8.37) | 0.71 | 0.48 | 0.14 |
| Site #6 | 440 | 39.30 (±6.95) | 413 | 39.26 (±6.96) | 27 | 39.81 (±6.93) | 0.40 | 0.69 | 0.08 |
| Site #7 | 94 | 29.66 (±5.71) | 61 | 29.02 (±5.32) | 33 | 30.85 (±6.29) | 1.42 | 0.16 | 0.32 |
| Site #8 | 441 | 34.28 (±9.40) | 55 | 33.84 (±9.56) | 386 | 34.34 (±9.39) | 0.37 | 0.72 | 0.053 |
| Site #9 | 924 | 38.02 (±10.53) | 147 | 32.78 (±8.12) | 777 | 39.01 (±10.65) | 8.09 | <0.001 | 0.61 |
| All data | fMRI | Behaviour | Difference | ||||||
| Study site | N | Trait anxiety (±s.d.) | N | Trait anxiety (±s.d.) | N | Trait anxiety (±s.d.) | t | P | Effect size (d) |
| Site #1 | 255 | 38.35 (±11.19) | 155 | 36.08 (±10.16) | 100 | 41.85 (±11.84) | 4.01 | <0.001 | 0.53 |
| Site #2 | 102 | 43.38 (±10.91) | 0 | – | 102 | 43.38 (±10.91) | – | – | – |
| Site #3 | 890 | 36.12 (±7.90) | 465 | 34.68 (±7.75) | 425 | 37.69 (±7.78) | 5.79 | <0.001 | 0.39 |
| Site #4 | 71 | 34.31 (±7.35) | 0 | – | 71 | 34.31 (±7.35) | – | – | – |
| Site #5 | 100 | 35.95 (±8.13) | 45 | 35.31 (±7.88) | 55 | 36.47 (±8.37) | 0.71 | 0.48 | 0.14 |
| Site #6 | 440 | 39.30 (±6.95) | 413 | 39.26 (±6.96) | 27 | 39.81 (±6.93) | 0.40 | 0.69 | 0.08 |
| Site #7 | 94 | 29.66 (±5.71) | 61 | 29.02 (±5.32) | 33 | 30.85 (±6.29) | 1.42 | 0.16 | 0.32 |
| Site #8 | 441 | 34.28 (±9.40) | 55 | 33.84 (±9.56) | 386 | 34.34 (±9.39) | 0.37 | 0.72 | 0.053 |
| Site #9 | 924 | 38.02 (±10.53) | 147 | 32.78 (±8.12) | 777 | 39.01 (±10.65) | 8.09 | <0.001 | 0.61 |
Notes: Sample sizes and mean trait anxiety scores (±s.d.) are reported for each site, for all data and separately for the fMRI and behavioural study contexts. Statistics for the difference between fMRI and behaviour contexts are also reported in the right-most column, specifically t and P-values from two-tailed independent sample t-tests (unequal variance) and effect size using Cohen’s d.
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