Table 1 Estimated average daily percent changes (ADPC) and ADPC differences between the cities by age group during the autumn 2021

7–9

Helsinki

ADPC

3.7 (P < 0.001)

-2.2 (P < 0.001)

0.4 (P = 0.04)

4.4 (P < 0.001)

Tampere

ADPC

4.4 (P = 0.006)

-0.1 (P = 0.8)

1.6 (P < 0.001)

-1.1 (P < 0.2)

Turku

ADPC

5.4 (P < 0.001)

0.2 (P = 0.4)

-1.0 (P = 0.004)

5.3 (P < 0.001)

Helsinki vs. Turku

ADPC Difference

-1.7 (P < 0.001)

-2.4 (P < 0.001)

1.5 (P < 0.001)

-1.0 (P < 0.001)

Helsinki vs. Tampere

ADPC Difference

-0.7 (P = 0.2)

-2.1 (P < 0.001)

-1.1 (P < 0.001)

5.5 (P < 0.001)

Tampere vs. Turku

ADPC Difference

-1.0 (P = 0.1)

-0.3 (P = 0.6)

2.6 (P < 0.001)

-6.4 (P < 0.001)

10–12

Helsinki

ADPC

3.8 (P < 0.001)

-3.2 (P < 0.001)

2.1 (P < 0.001)

1.9 (P < 0.001)

Tampere

ADPC

2.0 (P = 0.006)

-0.5 (P = 0.3)

2.0 (P < 0.001)

-0.5 (P < 0.2)

Turku

ADPC

3.9 (P < 0.001)

-0.3 (P = 0.04)

-0.2 (P = 0.6)

4.1 (P < 0.001)

Helsinki vs. Turku

ADPC Difference

-0.1 (P = 0.8)

-2.9 (P < 0.001)

2.3 (P < 0.001)

-2.2 (P < 0.001)

Helsinki vs. Tampere

ADPC Difference

1.8 (P < 0.001)

-2.7 (P < 0.001)

0.1 (P = 0.7)

2.4 (P < 0.001)

Tampere vs. Turku

ADPC Difference

-1.9 (P < 0.001)

-0.2 (P = 0.7)

2.2 (P < 0.001)

-4.6 (P < 0.001)

30–49

Helsinki

ADPC

-0.7 (P < 0.001)

-1.5 (P < 0.001)

1.2 (P < 0.001)

1.4 (P < 0.001)

Tampere

ADPC

-3.0 (P < 0.001)

0.1 (P = 0.8)

0.9 (P < 0.001)

1.9 (P < 0.001)

Turku

ADPC

0.8 (P < 0.001)

-0.6 (P = 0.003)

-1.3 (P < 0.001)

3.1 (P < 0.001)

Helsinki vs. Turku

ADPC Difference

-1.5 (P < 0.001)

-0.8 (P < 0.001)

2.5 (P < 0.001)

-1.7 (P < 0.001)

Helsinki vs. Tampere

ADPC Difference

2.3 (P < 0.001)

-1.6 (P < 0.001)

0.3 (P = 0.1)

-0.5 (P < 0.001)

Tampere vs. Turku

ADPC Difference

-3.8 (P < 0.001)

0.7 (P = 0.1)

2.2 (P < 0.001)

-1.1 (P < 0.001)