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Table 2 The calendar effect on the daily male births, Italian macro-areas 1 January 1999 to 30 June 2016

From: One day is not as good as another…at least not across the entire territory of Italy: an analysis of the differences in the daily distribution of births across Italian macro-regions, 1999–2016

Variables 1—NW 2—NE 3—C 4—S 5—IS
IRR S.E. IRR S.E. IRR S.E. IRR S.E. IRR S.E.
Day of the month
 1 0.980** (0.008) 0.989 (0.009) 0.980** (0.009) 0.977** (0.010) 0.974** (0.012)
 2 0.982** (0.008) 0.982* (0.009) 0.994 (0.009) 0.997 (0.010) 0.992 (0.013)
 3 0.991 (0.008) 0.995 (0.009) 1.009 (0.009) 1.009 (0.010) 1.022* (0.012)
 4 0.995 (0.008) 0.999 (0.009) 1.001 (0.009) 1.017* (0.010) 1.021* (0.012)
 5 0.991 (0.008) 1.006 (0.009) 1.007 (0.009) 1.002 (0.010) 1.010 (0.012)
 6 0.988 (0.008) 0.995 (0.009) 0.996 (0.009) 0.998 (0.010) 0.999 (0.012)
 7 0.981** (0.008) 0.995 (0.009) 0.997 (0.009) 1.009 (0.010) 1.009 (0.012)
 8 0.981** (0.008) 0.995 (0.009) 1.003 (0.009) 0.997 (0.010) 1.003 (0.012)
 9 0.981** (0.008) 0.982** (0.009) 0.998 (0.009) 0.997 (0.010) 0.993 (0.012)
 10 0.981** (0.008) 0.983** (0.009) 0.993 (0.009) 0.999 (0.010) 1.006 (0.012)
 11 0.977*** (0.008) 0.983* (0.009) 0.982** (0.009) 1.002 (0.010) 1.015 (0.012)
 12 0.981** (0.008) 0.990 (0.009) 0.996 (0.009) 1.001 (0.010) 1.006 (0.012)
 13 0.974*** (0.008) 0.977*** (0.009) 0.972*** (0.009) 0.986 (0.010) 0.981 (0.012)
 14 0.986* (0.008) 0.996 (0.009) 0.984* (0.009) 0.978** (0.009) 0.987 (0.012)
 15 Ref Ref Ref Ref Ref
 16 0.986* (0.008) 0.995 (0.009) 0.995 (0.009) 0.984* (0.010) 1.000 (0.012)
 17 0.960*** (0.008) 0.973*** (0.009) 0.952*** (0.009) 0.918*** (0.009) 0.963*** (0.012)
 18 0.999 (0.008) 0.996 (0.009) 0.997 (0.009) 1.019* (0.010) 1.015 (0.012)
 19 0.988 (0.008) 0.996 (0.009) 1.001 (0.009) 1.001 (0.010) 1.022* (0.012)
 20 0.997 (0.008) 1.005 (0.009) 1.011 (0.009) 1.020** (0.010) 1.026** (0.013)
 21 0.984** (0.008) 0.986 (0.009) 1.001 (0.009) 1.006 (0.010) 1.015 (0.012)
 22 0.987 (0.008) 0.994 (0.009) 0.986 (0.009) 0.974*** (0.009) 0.991 (0.012)
 23 0.995 (0.008) 0.994 (0.009) 0.999 (0.009) 0.978** (0.009) 1.012 (0.012)
 24 0.996 (0.008) 1.008 (0.009) 1.003 (0.009) 0.990 (0.010) 1.016 (0.013)
 25 0.984* (0.008) 0.987 (0.009) 0.990 (0.009) 0.969*** (0.010) 0.987 (0.012)
 26 0.978*** (0.008) 0.980** (0.009) 0.996 (0.009) 0.983* (0.010) 0.996 (0.012)
 27 0.986* (0.008) 0.992 (0.009) 1.001 (0.009) 1.005 (0.010) 1.022* (0.012)
 28 0.997 (0.008) 0.994 (0.009) 0.995 (0.009) 0.999 (0.010) 1.020 (0.012)
 29 0.979** (0.008) 0.987 (0.009) 0.981** (0.009) 0.980** (0.010) 0.988 (0.012)
 30 0.986* (0.008) 0.991 (0.009) 0.991 (0.009) 0.978** (0.010) 0.993 (0.012)
 31 0.972*** (0.010) 0.988 (0.011) 0.982* (0.011) 0.979* (0.011) 1.015 (0.015)
Day of the week
 Sunday 0.774*** (0.003) 0.770*** (0.003) 0.727*** (0.003) 0.562*** (0.003) 0.627*** (0.004)
 Monday 1.003 (0.004) 0.985*** (0.004) 0.974*** (0.004) 0.979*** (0.004) 1.003 (0.006)
 Tuesday 1.039*** (0.004) 1.016*** (0.004) 1.037*** (0.004) 1.046*** (0.005) 1.085***  
 Wednesday Ref Ref Ref Ref Ref
 Thursday 1.040*** (0.004) 1.002 (0.004) 1.019*** (0.004) 0.991* (0.004) 1.023*** (0.006)
 Friday 1.018*** (0.004) 1.025*** (0.004) 0.989** (0.004) 0.957*** (0.004) 1.022*** (0.006)
 Saturday 0.827*** (0.003) 0.837*** (0.004) 0.867*** (0.004) 0.800*** (0.004) 0.817*** (0.005)
 Fri_17 0.998 (0.017) 0.992 (0.018) 0.967* (0.019) 0.930*** (0.019) 0.972 (0.024)
 End/first of the year 0.828*** (0.013) 0.836*** (0.015) 0.766*** (0.014) 0.617*** (0.013) 0.676*** (0.018)
 Civil feast 0.850*** (0.011) 0.851*** (0.012) 0.783*** (0.012) 0.668*** (0.011) 0.705*** (0.015)
 Christmas 0.823*** (0.011) 0.823*** (0.012) 0.782*** (0.012) 0.611*** (0.011) 0.670*** (0.014)
 Other rel. feast 0.844*** (0.008) 0.835*** (0.008) 0.793*** (0.008) 0.666*** (0.008) 0.675*** (0.010)
 All Souls’ day 0.916*** (0.020) 0.927*** (0.023) 0.828*** (0.021) 0.756*** (0.021) 0.773*** (0.027)
N 6391 6391 6391 6391 6391
 Pseudo R2 0.131 0.125 0.130 0.177 0.148
 Likelihood-ratio test of alpha = 0 (chi-p value) 308.8 (p value 0.000) 90.2 (p value 0.000) 147.5 (p value 0.000) 1271 (p value 0.000) 251.1 (p value 0.000)
  1. Exponentiated coefficients reported. Controlling for month of birth and for year fixed effects. Standard errors in parentheses
  2. *p < 0.10, **p < 0.05, ***p < 0.01