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. 2022 Jun;23(5):503–523. doi: 10.1177/15270025211067786

Table 4.

Fractional Probit Estimator: Determinants of Monthly COVID-19 Cases - Marginal Effects.

(4.1) (4.2) (4.3) (4.4)
March Cases pc March Cases pc Mar-Apr Cases pc Mar-Apr Cases pc
ShPop 20-30 −0.827 −1.030 −2.460 −3.029
(−1.18) (−1.40) (−0.90) (−1.06)
ShPop 30-40 −0.906*** −0.934*** −3.620*** −3.610***
(−2.86) (−2.72) (−3.20) (−2.60)
ShPop 40-50 −0.0683 −0.159 −0.873 −1.086
(−0.14) (−0.33) (−0.41) (−0.50)
ShPop 50-60 −0.987*** −1.069*** −3.957*** −4.142***
(−2.74) (−2.91) (−2.72) (−2.78)
ShPop 60-70 −0.932* −0.911* −2.581 −2.479
(−1.95) (−1.89) (−1.52) (−1.48)
ShPop over 70 −0.206 −0.249 −0.691 −0.761
(−0.86) (−0.90) (−0.70) (−0.68)
PopDens −0.00000316 −0.00000330 −0.0000176* −0.0000177*
(−1.23) (−1.25) (−1.84) (−1.81)
Income 0.00000213* 0.00000173 0.0000143*** 0.0000129***
(1.95) (1.56) (3.60) (3.31)
Share of pop. in mun under 30k inhab 0.0243** 0.0297*** 0.0865** 0.106**
(2.27) (2.66) (2.15) (2.44)
Feb Cases 0.0000690*** 0.0000710*** 0.000293*** 0.000300***
(4.95) (4.67) (4.77) (4.50)
Jan-Feb matches pc 234.0** 856.5**
(2.37) (2.21)
Jan-Feb public pc 0.0193 0.0595
(0.68) (0.51)
Observations 98 98 98 98

Marginal effects; t statistics in parentheses (d) for discrete change of dummy variable from 0 to 1.

Robust standard errors, observations weighted by province population size *p < 0.1, **p < 0.05, ***p < 0.01.