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Table 2 Vitamin D status in children between departments (N = 7285)a

From: Variation in vitamin D status in infants and children: a two-year cross-sectional study in Shanghai, China

Variables

Pediatrics

Child Healthcare

VDD

VDI

VDS

P

VDD

VDI

VDS

P

All

359 (32.0)

383 (34.2)

379 (33.8)

 

618 (10.0)

2083 (33.8)

3463 (56.2)

 

Sex

        

 Boys

213 (32.1)

221 (33.3)

229 (34.5)

0.957

325 (10.2)

1053 (33.1)

1807 (56.7)

0.992

 Girls

146 (31.9)

162 (35.4)

150 (32.8)

 

293 (9.8)

1030 (34.6)

1656 (55.6)

 

Age (years)

        

 0–1

13 (6.8)

48 (25.3)

129 (67.9)

< 0.001

97 (6.6)

476 (32.6)

887 (60.8)

< 0.001

 1–3

36 (14.4)

105 (42)

109 (43.6)

 

224 (11.4)

837 (42.4)

912 (46.2)

 

 3–6

115 (36.5)

133 (42.2)

67 (21.3)

 

239 (10.2)

680 (29.1)

1417 (60.7)

 

 6–11

195 (53.3)

97 (26.5)

74 (20.2)

 

58 (14.7)

90 (22.8)

247 (62.5)

 

Seasonality

        

 Spring

120 (39.3)

612 (38.3)

81 (26.6)

< 0.001

173 (10.8)

612 (38.3)

814 (50.9)

< 0.001

 Summer

105 (26.1)

576 (32.4)

147 (36.5)

 

124 (7.0)

576 (32.4)

1077 (60.6)

 

 Autumn

57 (23.8)

447 (29.4)

104 (43.5)

 

126 (8.3)

447 (29.4)

948 (62.3)

 

 Winter

77 (44.3)

448 (35.4)

47 (27.0)

 

195 (15.4)

448 (35.4)

624 (49.3)

 
  1. a Values are expressed as n (%), and the data were analyzed with the Chi-square test. The cutoffs of VDD, VDI, and VDS are serum 25(OH)D levels (ng/mL) < 20, 20–30, and ≥ 30, respectively, according to the Endocrine Society guidelines