Table 2

OR (95% CI) for musculoskeletal symptoms within the last 12 months according to occupation and baggage handler seniority for baggage handlers and a reference group with less heavy work

 OR (CI 95%)
 Lower backNeck/upper backShouldersElbowsWristsHipsKneesAnkles
Model 1
Baggage handler
 No11111111
 Yes1.64 (1.42 to 1.91)1.34 (1.13 to 1.59)1.82 (1.54 to 2.15)1.84 (1.44 to 2.36)1.82 (1.43 to 2.31)1.45 (1.10 to 1.92)1.68 (1.42 to 1.99)1.14 (0.89 to 1.47)
Model 2.1
Seniority (years)N
 0 (reference)205911111111
 >0–34991.09 (0.85 to 1.38)0.97 (0.73 to 1.28)1.21 (0.92 to 1.60)0.82 (0.50 to 1.28)1.26 (0.84 to 1.85)1.19 (0.71 to 1.90)1.20 (0.91 to 1.58)0.75 (0.45 to 1.19)
 4–84041.25 (0.96 to 1.61)1.15 (0.85 to 1.53)1.57 (1.18 to 2.06)1.50 (0.98 to 2.23)1.46 (0.96 to 2.16)1.49 (0.90 to 2.37)1.48 (1.11 to 1.96)1.12 (0.70 to 1.73)
 9–164421.91 (1.52 to 2.39)1.45 (1.11 to 1.88)2.27 (1.77 to 2.91)2.19 (1.53 to 3.09)1.94 (1.35 to 2.74)0.94 (0.55 to 1.52)1.98 (1.54 to 2.54)1.06 (0.68 to 1.58)
 17–252662.41 (1.82 to 3.18)1.70 (1.24 to 2.32)2.31 (1.70 to 3.12)3.08 (2.07 to 4.52)2.33 (1.54 to 3.46)1.49 (0.90 to 2.38)1.81 (1.33 to 2.44)1.40 (0.88 to 2.16)
 >261673.02 (2.12 to 4.30)2.26 (1.53 to 3.30)2.31 (1.57 to 3.37)2.93 (1.74 to 4.76)3.15 (1.93 to 5.01)2.78 (1.66 to 4.53)2.83 (1.97 to 4.06)1.76 (1.05 to 2.86)
Model 2.2
Baggage handler
 No11111111
 Yes1.10 (0.89 to 1.35)0.97 (0.76 to 1.22)1.37 (1.08 to 1.72)1.06 (0.75 to 1.50)1.22 (0.87 to 1.70)1.03 (0.68 to 1.55)1.24 (0.98 to 1.57)0.81 (0.55 to 1.17)
Seniority (per 10 years)
 Reference11111111
 Baggage handler1.42 (1.26 to 1.61)1.32 (1.16 to 1.52)1.27 (1.12 to 1.45)1.55 (1.29 to 1.85)1.38 (1.16 to 1.64)1.27 (1.03 to 1.56)1.30 (1.14 to 1.48)1.30 (1.07 to 1.57)
Model 3
Baggage handler
 No1111111
 Yes1.16 (0.94 to 1.44)1.02 (0.80 to 1.30)1.40 (1.10 to 1.77)1.10 (0.77 to 1.56)1.31 (0.93 to 1.83)1.35 (1.06 to 1.71)0.92 (0.62 to 1.34)
Seniority (per 10 years)
 Reference1111111
 Baggage handler1.38 (1.22 to 1.56)1.30 (1.14 to 1.50)1.27 (1.11 to 1.45)1.53 (1.28 to 1.83)1.33 (1.11 to 1.60)1.26 (1.01 to 1.44)1.21 (0.99 to 1.49)
Age (per 10 years)1.06 (0.98 to 1.15)1.01 (0.92 to 1.11)1.04 (0.95 to 1.14)1.07 (0.93 to 1.23)1.07 (0.94 to 1.21)1.17 (1.07 to 1.28)1.36 (1.19 to 1.56)
Smoking
 No1111111
 Former smoker1.02 (0.85 to 1.23)1.16 (0.94 to 1.43)1.37 (1.11 to 1.69)1.01 (0.74 to 1.36)1.35 (1.01 to 1.82)1.41 (1.15 to 1.74)1.47 (1.06 to 2.06)
 Yes1.28 (1.05 to 1.55)1.20 (0.96 to 1.49)1.53 (1.23 to 1.90)1.29 (0.95 to 1.76)1.30 (0.96 to 1.77)1.21 (0.97 to 1.51)1.76 (1.26 to 2.49)
Physical activity (h/week)
 <21111111
 2–40.94 (0.74 to 1.21)0.70 (0.54 to 0.91)0.89 (0.68 to 1.18)1.00 (0.67 to 1.50)0.96 (0.66 to 1.40)0.73 (0.57 to 0.95)0.76 (0.53 to 1.11)
 >40.75 (0.59 to 0.96)0.56 (0.43 to 0.72)0.94 (0.72 to 1.24)0.93 (0.63 to 1.39)0.74 (0.51 to 1.09)0.52 (0.41 to 0.68)0.64 (0.44 to 0.94)
BMI
 Underweight0.81 (0.41 to 1.50)0.94 (0.44 to 1.85)0.74 (0.33 to 1.68)0.52 (0.12 to 1.49)1.73 (0.76 to 3.56)0.67 (0.28 to 1.40)0.81 (0.24 to 2.10)
 Normal weight1111111
 Obese1.11 (0.94 to 1.32)1.24 (1.02 to 1.51)1.36 (1.12 to 1.65)0.86 (0.65 to 1.33)0.79 (0.61 to 1.04)1.25 (1.03 to 1.52)1.06 (0.78 to 1.44)
 Overweight1.64 (1.28 to 2.10)1.46 (1.10 to 1.95)1.79 (1.35 to 2.36)1.28 (0.86 to 1.88)1.40 (0.96 to 2.01)1.99 (1.52 to 2.61)1.98 (1.34 to 2.91)
Model 4
Baggage handler
 No1111111
 Yes1.11 (0.88 to 1.40)0.94 (0.72 to 1.22)1.35 (1.05 to 1.73)1.05 (0.73 to 1.51)1.24 (0.87 to 1.75)1.33 (1.03 to 1.70)0.86 (0.58 to 1.28)
Seniority (per 10 years)
 Reference1111111
 Baggage handlers1.20 (1.05 to 1.38)1.13 (0.97 to 1.32)1.12 (0.97 to 1.29)1.43 (1.18 to 1.72)1.19 (0.98 to 1.44)1.13 (0.98 to 1.30)1.11 (0.89 to 1.37)
  • Model 1: Baggage handler (yes/no) and age.

  • Model 2.1: Baggage handler (yes/no), baggage handler seniority (categorical) and age.

  • Model 2.2: Baggage handler (yes/no), baggage handler seniority (continuous) and age.

  • Model 3: Baggage handler (yes/no), baggage handler seniority (continuous), age, height, weight, smoking, physical leisure activity.

  • Model 4: Baggage handler (yes/no), baggage handler seniority (continuous), age, height, weight, smoking, physical leisure activity, general health.

  • BMI, body mass index.

  • Italic typeface indicates significance at p<0.05.