Table 2.
Normative values per age group of OT, OD, OI, and TDI.
| OT | OD | OI | TDI | ||
|---|---|---|---|---|---|
| Overall sample | |||||
| N | 209 | 209 | 209 | 209 | |
| Mean | 6.37 | 10.57 | 12.82 | 29.76 | |
| SD | 2.66 | 2.48 | 2.18 | 4.8 | |
| Mean CI 95% | (6.01, 6.73) | (10.23, 10.9) | (12.52, 13.11) | (29.11, 30.4) | |
| Min | 0 | 0 | 5 | 12.5 | |
| Max | 14.5 | 16 | 16 | 41 | |
| Percentiles | 5 | 1.5 | 6 | 8 | 20.75 |
| 10 | 3 | 7 | 10 | 22.5 | |
| 25 | 4.5 | 9 | 12 | 27.25 | |
| 50 | 6.25 | 11 | 13 | 30.5 | |
| 75 | 8.25 | 12 | 14 | 33.12 | |
| 90 | 9.75 | 13 | 15 | 35 | |
| 95 | 11.12 | 14 | 16 | 36.62 | |
| Age group (20–30) | |||||
| N | 33 | 33 | 33 | 33 | |
| Mean | 8.17 | 11.15 | 13.00 | 32.35 | |
| SD | 2.28 | 2.37 | 2.02 | 3.90 | |
| Mean CI 95% | (7.39, 8.94) | (10.34, 11.96) | (12.3, 3.69) | (31.01, 33.68) | |
| Min | 3.25 | 6 | 8 | 22.5 | |
| Max | 14.5 | 16 | 13 | 41 | |
| Percentiles | 5 | 4.8 | 8 | 10 | 26.5 |
| 10 | 5.65 | 8 | 11 | 27.8 | |
| 25 | 6.5 | 10 | 12 | 29.5 | |
| 50 | 8.5 | 11 | 13 | 32.5 | |
| 75 | 9.5 | 13 | 15 | 34.5 | |
| 90 | 10.6 | 13.8 | 16 | 37.45 | |
| 95 | 11.8 | 14.8 | 16 | 38.25 | |
| Age group (30–40) | |||||
| N | 25 | 25 | 25 | 25 | |
| Mean | 7.47 | 12.04 | 13.76 | 33.23 | |
| SD | 2.47 | 1.86 | 1.50 | 2.46 | |
| Mean CI 95% | (6.5, 8.44) | (11.31, 12.77) | (13.17, 14.35) | (32.27, 34.19) | |
| Min | 2.5 | 9 | 11 | 27.5 | |
| Max | 12.5 | 15 | 16 | 39 | |
| Percentiles | 5 | 3.35 | 9 | 11.2 | 29.6 |
| 10 | 5.05 | 9 | 12 | 30.2 | |
| 25 | 6.25 | 11 | 13 | 31.5 | |
| 50 | 7.5 | 12 | 14 | 33.5 | |
| 75 | 8.5 | 13 | 15 | 34.5 | |
| 90 | 11 | 14 | 15.6 | 35.3 | |
| 95 | 11.4 | 14.8 | 16 | 36.5 | |
| Age group (40–50) | |||||
| N | 29 | 29 | 29 | 29 | |
| Mean | 6.61 | 11.20 | 13.48 | 31.30 | |
| SD | 2.53 | 2.02 | 1.57 | 3.54 | |
| Mean CI 95% | (5.69, 7.53) | (10.47, 11.94) | (12.91, 14.05) | (30.01, 32.58) | |
| Min | 2.5 | 6 | 10 | 23.5 | |
| Max | 11.5 | 14 | 16 | 38.5 | |
| Percentiles | 5 | 3.5 | 8 | 11 | 25.9 |
| 10 | 4.1 | 8.8 | 11.8 | 27.3 | |
| 25 | 4.5 | 10 | 12 | 28.5 | |
| 50 | 6 | 12 | 14 | 31.25 | |
| 75 | 8.5 | 13 | 14 | 33.5 | |
| 90 | 10.5 | 13 | 15.2 | 35.5 | |
| 95 | 10.65 | 13.6 | 16 | 37.3 | |
| Age group (50–60) | |||||
| N | 71 | 71 | 71 | 71 | |
| Mean | 6.01 | 10.27 | 13.11 | 29.38 | |
| SD | 2.58 | 2.38 | 1.84 | 4.10 | |
| Mean CI 95% | (5.41, 6.61) | (9.71, 10.82) | (12.68, 13.54) | (28.43, 30.33) | |
| Min | 1.5 | 5 | 6 | 17.5 | |
| Max | 13.25 | 16 | 16 | 38.5 | |
| Percentiles | 5 | 1.5 | 6.5 | 11 | 22.5 |
| 10 | 3.5 | 7 | 11 | 24.5 | |
| 25 | 4.5 | 8.5 | 12 | 26.5 | |
| 50 | 5.5 | 10 | 13 | 29.5 | |
| 75 | 7.5 | 12 | 14.5 | 32.5 | |
| 90 | 9.25 | 13 | 15 | 33.5 | |
| 95 | 10.5 | 14.5 | 16 | 36 | |
| Age group (>60) | |||||
| N | 51 | 51 | 51 | 51 | |
| Mean | 5.01 | 9.53 | 11.45 | 26.03 | |
| SD | 2.35 | 2.69 | 2.93 | 5.13 | |
| Mean CI 95% | (4.37, 5.65) | (8.79, 10.27) | (10.64, 12.26) | (24.62, 27.44) | |
| Min | 0 | 0 | 4 | 12.5 | |
| Max | 11.25 | 14 | 15 | 30.25 | |
| Percentiles | 5 | 1.5 | 6 | 5 | 17.375 |
| 10 | 1.5 | 6 | 7 | 20.5 | |
| 25 | 3.5 | 7.5 | 10.5 | 22.5 | |
| 50 | 5.5 | 10 | 12 | 27.25 | |
| 75 | 6.375 | 11 | 13.5 | 30 | |
| 90 | 7.5 | 13 | 15 | 31.5 | |
| 95 | 8.875 | 13 | 15 | 33 |
SD = standard deviation, CI = confidence interval, Min = minimum, Max = maximum.