Explainable predictive models of short stature and exploration of related environmental growth factors: a case-control study

Table 1 General information for the case and control groups

Variable	Case	Control	t/χ2	P-value
Boys			0.11	0.74
N (%)	54 (54.00)	112 (56.00)
Age (years)	8.29 ± 2.53	7.96 ± 0.50	1.73	0.21
Ethnicity (%)			1.62	0.20
Hans	97 (97.00)	187 (93.50)
Others	3 (3.00)	13 (6.50)
Resident (%)			57.83	0.00
City	72 (72.00)	199 (99.50)
Township	17 (17.00)	1 (0.50)
Countryside	11 (11.00)	0 (0.00)
Parity (%)				0.20*
1	79 (79.00)	172 (86.00)
2	20 (20.00)	26 (13.00)
3	1 (1.00)	2 (1.00)
Preterm birth (%)			3.69	0.06
Yes	4 (4.00)	21 (10.50)
No	96 (96.00)	179 (89.50)
Delivery method (%)			3.53	0.06
Natural birth	44 (44.00)	111 (55.50)
Cesarean section	56 (56.00)	89 (44.50)
Caregiver education (%)			67.71	0.00
Elementary school and below	4 (4.00)	2 (1.00)
Junior high school	30 (30.00)	4 (2.00)
High school/technical secondary school	23 (23.00)	28 (14.00)
College/vocational college	11 (11.00)	38 (19.00)
University and above	32 (32.00)	128 (64.00)

Note: *, Fisher’s exact test. The t-test was used to compare all continuous variables and the results were presented in mean ± SD. The χ2 test or Fisher’s exact test was used to compare the categorical variables and the results were presented as frequency and percentage (%). Only variables significant at p < 0.05 were entered into the univariate conditional logistic regression

ISSN: 1472-6823