Table 5.
Results of bivariate analyses for RSI and related conditions (4 outcomes), compared to asymptomatic workers (n = 173)
| Symptoms other than RSI | Symptoms | 'RSI-like' | RSI | |||||
| Variables | N = 102/275 N (%) | OR 95% CI | n = 222/395 N (%) | OR 95% CI | n = 118/291 N (%) | OR 95% CI | n = 55/228 N (%) | OR 95% CI |
| Sex: | ||||||||
| Male | 40 (39.2) | 1* | 87 (45.8) | 1* | 46 (30.9) | 1* | 18 (14.9) | 1* |
| Female | 62 (60.8) | 2.28 (1.38 – 3.76) | 135 (65.8) | 2.28 (1.52 – 3.43) | 72 (50.7) | 2.30 (1.43 – 3.72) | 37 (3.0) | 3.02 (1.60 – 5.74) |
| Job: | ||||||||
| Manager | 19 (18.1) | 1 | 32 (42.1) | 1† | 13 (22.8) | 1† | 6 (12.0) | 1† |
| Clerk | 31 (30.7) | 1.20 (0.60 – 2.39) | 81 (57.4) | 1.86 (1.04 – 3.29) | 50 (45.4) | 2.85 (1.40 – 6.28) | 28 (31.8) | 3.69 (1.35 – 10.09) |
| Cashier | 41 (40.6) | 2.16 (1.09 – 4.28) | 82 (65.1) | 2.56 (1.40 – 4.67) | 39 (47.0) | 2.43 (1.20 – 5.65) | 18 (29.0) | 2.60 (0.92 – 7.38) |
| Other | 10 (9.1) | 1.10 (0.44 – 2.78) | 24 (53.3) | 1.57 (0.74 – 3.32) | 14 (40.0) | 1.69 (0.88 – 5.76) | 2 (8.7) | 0.70 (0.13 – 3.76) |
| Education: | ||||||||
| Up to secondary school | 33 (32.4) | 1 | 82 (56.2) | 1 | 48 (42.8) | 1 | 22 (25.5) | 1 |
| University degree | 69 (67.8) | 1.23 (0.73 – 2.06) | 140 (56.2) | 1.00 (0.66 – 1.51) | 70 (39.1) | 1.52 (0.84 – 2.78) | 33 (23.2) | 1.24 (0.59 – 2.62) |
| Marital status: | ||||||||
| Single | 24 (23.5) | 1 | 41 (57.8) | 1 | 16 (34.8) | 1 | 6 (16.7) | 1 |
| Married | 58 (56.9) | 0.65 (0.35 – 1.22) | 139 (55.6) | 0.92 (0.54 – 1.56) | 80 (41.9) | 1.35 (0.69 – 2.64) | 42 (27.4) | 1.89 (0.73 – 4.87) |
| Separated/Divorced | 20 (19.6) | 0.83 (0.38 – 1.82) | 42 (56.8) | 1.02 (0.53 – 1.99) | 22 (40.7) | 1.38 (0.61 – 3.12) | 7 (18.0) | 1.17 (0.35 – 3.88) |
| Mean Diff (SE) | OR 95%CI | Mean Diff (SE) | OR 95%CI | Mean diff (SE) | OR 95%CI | Mean diff (SE) | OR 95%CI | |
| Age (OR by 5 year age-groups) | 1.59 (0.67) | 0.75 (0.58 – 0.96)† | 1.46 (0.53) | 0.77 (0.63 – 0.95)∞ | 1.34 (0.62) | 0.80 (0.62 – 1.02) | 0.96 (0.82) | 0.82 (0.60 – 1.12) |
| Time at bank in years (OR by year worked in bank) |
1.29 (0.65) | 0.95 (0.91 – 1.00)∞ | 1.04 (0.51) | 0.96 (0.92 – 1.0) | 0.89 (0.61) | 0.97 (0.92 – 1.01) | 0.30 (0.81) | 0.99 (0.93 – 1.05) |
* p < 0.001, † p < 0.02, ∞ p <= 0.05
'Symptoms other than RSI" refers to individuals considered to have 'symptoms of upper limbs unlikely to be related to RSI' (n = 102).
The variable 'symptoms' refers to all subjects with symptoms of upper extremities (n = 222).
To be considered as having 'RSI-like condition', positive responses to all 4 screening questions were required (n = 118).
RSI includes confirmed cases of RSI following full clinical assessment (n = 55).
For the variable symptoms, the total sample size of 375 is used as the denominator.
For the other symptom-related variables, the denominator includes 173 cases with no symptoms of upper limbs added to the respective numerator.