Table 2 Association of air pollutant concentrations and water quality indicators with clusters of multimorbidity

Air pollutants

 SO2

1.02

1.01, 1.03

0.003

1.01

1.00, 1.02

0.024

0.97, 1.02

 PM10

1.02

1.01, 1.04

 < 0.001

1.02

1.01, 1.03

 < 0.001

0.99, 1.03

 O3

1.08

1.06, 1.11

 < 0.001

1.08

1.07, 1.09

 < 0.001

1.00, 1.06

 NO2

0.97

0.95, 0.98

 < 0.001

0.98

0.97, 0.99

 < 0.001

0.97, 1.03

Water quality

 Satisfactory

ref

 Physico-chemical contamination

1.81

1.30, 2.52

 < 0.001

1.39

1.11, 1.73

0.004

1.14, 3.45

 Microbiological contamination

2.05

1.54, 2.72

 < 0.001

1.57

1.31, 1.88

 < 0.001

1.12, 2.83

 Combined contamination

1.84

1.40, 2.41

 < 0.001

1.17

0.98, 1.40

0.081

1.31, 3.02

Respiratory

Metabolic syndrome

OR

95% CI

p

OR

95% CI

p

Air pollutants

 SO2

1.02

1.00, 1.03

0.040

1.00

0.99, 1.01

0.499

 PM10

1.01

0.99, 1.02

0.456

1.01

1.00, 1.01

0.050

 O3

1.01

0.99, 1.04

0.334

1.02

1.01, 1.03

0.002

 NO2

1.00

0.98, 1.02

0.958

0.99

0.98, 1.00

0.058

Water quality

 Satisfactory

ref

 Physico-chemical contamination

1.14

0.71, 1.85

0.584

1.16

0.94, 1.42

0.163

 Microbiological contamination

1.54

1.08, 2.21

0.017

1.23

1.06, 1.44

0.008

 Combined contamination

1.12

0.78, 1.60

0.543

1.04

0.90, 1.21

0.572