Table 1.

Comparison of gender, age, and seasonal distribution between the two groups

Clinical index	MPNP group (n = 11)	MPNP group (n = 20)	Z/χ2	P value
Female (n, %)	6,54.55%	14,70.00%	–	0.255a
Age (years)	5.0 (2.0–7.0)	3.5 (1.5–9.7)	−0.248	0.804
0–3 years	4 (36.36%)	10 (50%)	3.147	0.207
3–6 years	3 (27.27%)	1 (5%)
6–14 years	4 (36.36%)	9 (45%)
Spring	1 (9.09%)	4 (20%)	2.898	0.408
Summer	1 (9.09%)	5 (25%)
Autumn	3 (27.27%)	2 (10%)
Winter	6 (54.55%)	9 (45%)

Data are presented as means ± SDs or medians (Q25, Q75)

^a Fisher’s exact test