Table 3 Incidence rate ratios of prescription drug use among patients in primary health care

Gender

Females

1

1

Males

1.06 (1.04-1.09)

<0.001

0.99 (0.96-1.02)

0.674

Age

20-39

1

1

40-59

2.41 (2.31-2.52)

<0.001

2.29 (2.19-2.39)

<0.001

60-79

4.34 (4.12-4.57)

<0.001

3.78 (3.62-3.96)

<0.001

80-

6.24 (5.79-6.72)

<0.001

Multimorbidity level

RUB 0 (low)

1

1

RUB 1

0.74 (0.71-0.78)

<0.001

0.69 (0.66-0.73)

<0.001

RUB 2

0.94 (0.90-0.98)

0.004

0.92 (0.88-0.97)

0.001

RUB 3

1.33 (1.29-1.37)

<0.001

1.35 (1.30-1.41)

<0.001

RUB 4

1.66 (1.58-1.74)

<0.001

1.89 (1.74-2.05)

<0.001

RUB 5 (high)

1.75 (1.63-1.86)

<0.001

2.26 (2.00-2.55)

<0.001

Income

1 (low)

1

-

2

1.00 (0.98-1.03)

0.811

-

3

0.78 (0.75-0.81)

<0.001

-

4 (high)

0.70 (0.68-0.72)

<0.001

-

Education

1 (low)

-

1

2

-

0.97 (0.91-1.02)

0.227

3

-

0.82 (0.80-0.85)

<0.001

4 (high)

-

0.70 (0.67-0.73)

<0.001