Table 1

 Demographics and results of prick-to-prick tests and logistic regression analysis

Group
A (grape harvesters)B (workers in grape selection)C (workers in grape de-stemming/crushing/pressing machines)D (controls)
Age, mean (SE)39.9 (1.4)39.8 (1.3)34.8 (1.2)41.0 (1.4)
Sex, F/M49/71120/045/7561/59
Positive history of allergy (%)29/120 (24.2%)35/120 (29.2%)38/120 (31.7%)28/120 (23.3%)
Positive family history of allergy (%)32/120 26.7%20/120 16.7%32/120 26.7%25/120 20.8%
Duration of occupational exposure (mth), mean (SE)170 (15.9)89.7 (7.6)89.3 (9.4)139.4 (14.7)
Positive SPT to grapes (%)8 (6.7%)5 (4.2%)00
Logistic regression analysis: dependent variable SPT to grapes (1 = yes, 0 = no) (only groups A and B were included)
VariableOdds ratio95% CI
Sex0.9170.197–4.262
Age0.9760.920–1.035
Personal history of atopic diseases1.0510.267–4.132
Family history of atopic diseases1.1500.278–4.752
Duration of occupational exposure1.0031.001–1.006
Group0.9620.193–4.799