Table 5 Interrupted time-series regression of infection rate per 100,000 in relation to countries- and sub-countries stringency Indices (Intervention)

Country level

India

Nepal

Nigeria

Colombia

Mexico

South Korea

Italy

Germany

Sweden

 Baseline trend

0.0001*

−0.001

7.9 × 10^–6

0.001*

0.006*

0.004

0.002

0.136*

0.025*

 At intervention 1

−0.148*

−0.01

0.003

0.561*

−2.676*

8.160*

−12.819*

61.896*

−0.073^a

 Trend after intervention 1

0.042*

0.004*

0.006*

0.114*

0.461*

−0.181*

3.135*

−1.368*

1.787*

 At intervention 2

–

–

–

–

–

0.626

31.33*

–

−3.262

 Trend after intervention 2

–

–

–

–

–

0.124*

−4.857*

–

−0.718

 At intervention 3

0.384

−0.509

0.604*

0.946

–

−0.119

−4.98

−1.213

−6.781

 Trend after intervention 3

0.098*

0.142*

0.02*

0.316*

–

−0.069*

0.557

0.973*

−1.303

 General trend after all levels of intervention

0.14*

0.146*

0.025*

0.432*

0.467*

0.016*

−1.163*

−0.232*

−0.21

Sub-country level

Kerala

Kathmandu

Abuja

North Santander

Nuevo León

Daegu

Lombardy

Baden-Württemberg

Västra Götaland

 Baseline trend

0.005*

0.006

0.014*

0.022*

0.021*

6.33*

3.33*

0.838*

0.401*

 At intervention 1

0.33*

−0.117

0.091

0.432

−1.214*

105.136*

130.759*

75.703*

12.026^a

 Trend after intervention 1

−0.011*

−0.006

0.076

−0.021

0.164*

−10.589*

−5.785*

−2.468*

0.433

 At intervention 2

–

–

–

–

–

–

–

–

–

 Trend after intervention 2

–

–

–

–

–

–

–

–

–

 At intervention 3

0.395*

0.127

0.91

0.439

–

30.13

−3.432

7.368

14.163

 Trend after intervention 3

0.170*

0.026

−0.069

−0.02

–

4.223*

0.934

1.646*

−0.639

 General trend after all levels of intervention

0.165*

0.026

0.021

−0.019

0.185*

−0.036*

−1.52*

0.016

0.195