Table 4.
Distribution of the birth quartile according to the season analysed.
Season
Quartile
Total
X
2
df
p
V
Odd-ratio
(CI 95%)
Q1
fr (%)
Q2
fr (%)
Q3
fr (%)
Q4
fr (%)
Q1-Q4
Q2-Q4
Q3-Q4
Total
1359
(33.2)
1077
(26.3)
895
(21.8)
766
(18.7)
4097
1.884
6
.930
0.015
2018-2019
453
(33.4)
350
(25.8)
309
(22.8)
245
(18.1)
1357
67.363
3
.000
***
0.223
1.849
(1.849-1.849)
1.429
(1.429-1.429)
1.261
(1.261-1.261)
2019-2020
451
(32.7)
362
(26.3)
300
(21.8)
265
(19.2)
1378
57.907
3
.000
***
0.205
1.702
(1.698-1.706)
1.366
(1.363-1.369)
1.132
(1.129-1.135)
2020-2021
455
(33.4)
365
(26.8)
286
(21.0)
256
(18.8)
1362
69.959
3
.000
***
0.227
1.777
(1.776-1.778)
1.426
(1.425-1.427)
1.117
(1.117-1.118)
Note. Q= quartile; fr= frequency; %= percentage; X
2
=chi square; df =degrees of freedom; p= significance level; V= Cramer's V.
***p < 0.001.