Table 2.
Summary statistics for BARS test measures.
| BARS Test | Measure | Overall (n = 281) | Female 6–9 yrs (n = 53) | Female 10–14 yrs (n = 80) | Male 6–9 yrs (n=42) | Male 10–14yrs (n = 103) |
|---|---|---|---|---|---|---|
| Median (IQR†) [Min, Max] | Median (IQR) [Min, Max] | Median (IQR) [Min, Max] | Median (IQR) [Min, Max] | Median (IQR) [Min, Max] | ||
| Continuous Performance | D’Prime + | 3.69 (1.29) [0.26, 5.24] | 3.43 (0.92) [1.15, 5.00] | 3.92 (1.26) [1.62, 5.24] | 2.86 (1.51) [0.26, 4.77] | 4.03 (1.32) [1.41, 5.24] |
| Hit Latency (sec)*- | 0.45(0.10) [0.26, 0.73] | 0.52 (0.09) [0.37, 0.73] | 0.42 (0.09) [0.33, 0.61] | 0.50 (0.09) [0.26, 0.67] | 0.42 (0.07) [0.28, 0.59] | |
| Misses - | 5 (9) [0, 54] | 5 (8) [0, 52] | 4.5 (10.5) [0, 38] | 10.5 (12) [1, 54] | 4 (9) [0, 30] | |
| False Alarms* - | 2 (4) [0, 47] | 3 (3) [0, 21] | 1 (3) [0, 33] | 6 (11) [1, 47] | 2 (4) [0, 21] | |
| Selective Attention | Response Latency (sec)*- | 0.36 (0.10) [0.12, 0.70] | 0.44 (0.09) [0.28, 0.70] | 0.34 (0.07) [0.23, 0.52] | 0.42 (0.13) [0.12, 0.65] | 0.33 (0.06) [0.23, 0.49] |
| Wrong Count*- | 2 (2) [0, 8] | 2 (2) [0, 6] | 1 (2) [0, 5] | 3 (2) [0, 8] | 2 (2) [0, 8] | |
| Omit Count- | 1 (2) [0, 15] | 1 (2) [0, 10] | 1 (2) [0, 6] | 2 (2) [0, 15] | 1 (2) [0, 7] | |
| Proportion Correct*+ | 0.90 (0.10) [0.43, 1.00] | 0.90 (0.10) [0.63, 1.00] | 0.90 (0.10) [0.63, 1.00] | 0.83 (0.13) [0.43, 1.00] | 0.90 (0.13) [0.67, 1.00] | |
| Finger Tapping | Total Tap* + | 211 (48) [131, 317] | 179 (33) [131, 291] | 217.5 (29.5) [154, 317] | 183.5 (32) [141, 233] | 230 (35) [174, 311] |
| Simple Reaction Time | Response Latency (sec)*- | 0.39 (0.11) [0.26, 1.03] | 0.47 (0.13) [0.35, 1.03] | 0.37 (0.06) [0.28, 0.59] | 0.45 (0.15) [0.32, 0.67] | 0.35 (0.09) [0.26, 0.64] |
| Digit Span | Forward Count + | 5 (2) [0, 9] | 4 (1) [3, 6] | 5 (2) [3,9] | 4 (2) [0, 6] | 5 (1) [0, 8] |
| Reverse Count + | 3 (1) [0, 8] | 3 (1) [0, 6] | 4 (2) [0, 7] | 3 (3) [0, 4] | 3 (1) [0, 8] | |
| Symbol Digit | Response Latency (sec) - | 2.49 (1.17) [1.38, 11.89] | 3.20 (1.28) [1,97, 8.57] | 2.13 (0.53) [1.54, 3.80] | 4.02 (1.92) [2.56, 11.89] | 2.28 (0.67) [1.34, 3.97] |
| Total Errors - | 0 (2) [0, 17] | 0 (1) [0, 10] | 0 (1) [0, 4] | 1.5 (3) [0, 17] | 0 (2) [0, 10] |
*
Significant difference by sex (FDR adjusted p < 0.05; assessed with Wilcoxon rank-sum test due to non-normality). All BARS measures comparisons by age group were statistically significant (FDR adjusted p < 0.05; Wilcoxon rank-sum test).
†
IQR = Inter-quartile range
Note: Plus sign (+) indicates a higher score = better performance; Minus sign (−) indicates a lower score = better performance