Table 2 Potential determinants of all-cause hospitalizations in the past three months

Respiratory condition

No respiratory conditions

1.00

-

1.00

-

Asthma-like symptoms/dyspnoea/other nasal problems

1.62 [1.15 to 2.28]

0.005

2.09 [1.65 to 2.65]

<0.001

Allergic rhinitis without asthma and chronic bronchitis

1.73 [1.09 to 2.73]

0.019

1.79 [1.07 to 2.98]

0.027

Asthma without chronic bronchitis

2.08 [1.84 to 2.35]

<0.001

2.09 [1.32 to 3.32]

0.002

Chronic bronchitis without asthma

1.85 [1.44 to 2.39]

<0.001

3.38 [1.95 to 5.88]

<0.001

Asthma and chronic bronchitis

2.36 [1.45 to 3.84]

0.001

4.24 [2.06 to 8.70]

<0.001

Gender

Male

1.00

-

1.00

-

Female

1.46 [1.04 to 2.07]

0.030

0.70 [0.53 to 0.91]

0.008

Occupational status

White collar/house-person/student

1.00

-

1.00

-

Blue collar

1.31 [1.05 to 1.63]

0.016

0.74 [0.43 to 1.28]

0.278

Unemployed/retired subject

1.60 [1.03 to 2.50]

0.038

1.39 [1.00 to 1.93]

0.049

Smoking habits

Never smoking

1.00

-

1.00

-

Past smoking

1.22 [0.87 to 1.70]

0.252

1.20 [1.08 to 1.33]

0.001

Current smoking

1.45 [0.96 to 2.18]

0.076

0.97 [0.62 to 1.53]

0.892

High level of outdoor air pollution

Absent

1.00

-

1.00

-

Present

1.05 [0.81 to 1.37]

0.708

1.47 [1.18 to 1.84]

0.001