Table 1 Descriptive statistics for study group and its sub-groups during the follow-up period 1992–2008. Mean thermotactile perception thresholds for cold (TPTC) and warmth (TPTW) measured on the volar side of two distal phalanges on the right and left index finger among vibration exposed (ETHV) and un-exposed (NETHV) workers during the follow-up period. LTVD1 and LTVD2 are two different lifetime vibration doses. For more information, see text
From: Long-term effect of hand-arm vibration on thermotactile perception thresholds
1992 | 2008 | |||||
|---|---|---|---|---|---|---|
ALL (n = 140) | NEHTV (n = 41) | EHTV (n = 99) | ALL (n = 142) | NEHTV (n = 35) | EHTV (n = 107) | |
Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | |
Age (years) | 41 (39, 42) | 43 (40, 46) | 39 (38, 41) | 55 (53, 57) | 59 (56, 62) | 54 (52, 56) |
Height (cm) | 179 (178, 180) | 179 (178, 181) | 179 (178, 180) | 179 (178, 180) | 179 (177, 181) | 179 (178, 180) |
LTVD1 (mh/s2)× 103 | 21.0 (16.7, 25.3) | 0 | 29.7 (24.5, 35.0) | 28.4 (23.7, 33.2) | 0.0 (0, 0.0) | 37.7 (32.6, 42.9) |
LTVD2 (m/s2) | 0.9 (0.7, 1.2) | 0 | 1.3 (1.1, 1.6) | 0.6 (0.4, 0.7) | 0 | 0.7 (0.6, 0.9) |
Right hand | ||||||
TPTW (°C) | 34.1 (33.6, 34.6) | 33.1 (32.5, 33.7) | 34.5 (33.8, 35.2) | 38.8 (38.3, 39.4) | 38.5 (37.5, 39.6) | 38.9 (38.3, 39.6) |
TPTC (°C) | 25.0 (24.4, 25.5) | 25.3 (24.3, 26.2) | 24.9 (24.2, 25.5) | 26.6 (26.0, 27.2) | 25.7 (24.1, 27.3) | 26.9 (26.3, 27.5) |
Left hand | ||||||
TPTW (°C) | 33.7 (33.2, 34.2) | 33.2 (32.5, 34.0) | 33.9 (33.2, 34.5) | 38.4 (37.9, 38.9) | 38.3 (37.1, 39.4) | 38.5 (37.8, 39.1) |
TPTC (°C) | 25.2 (24.6, 25.8) | 25.7 (24.8, 26.7) | 25.0 (24.2, 25.7) | 26.9 (26.2, 27.5) | 26.6 (24.8, 28.5) | 27.0 (26.3, 27.6) |