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Research ArticleOriginal Article
Open Access

Vitamin D status among residents of Molidawa Daur Autonomous Banner, Inner Mongolia, North China

Jingwen Hu, Yunmei Liang, Guiping Wen, Dezhong Chen, Yuanjing Liu, Hongmei Zhang and Xiaosong Qin
Saudi Medical Journal April 2023, 44 (4) 413-420; DOI: https://doi.org/10.15537/smj.2023.44.4.20220780
Jingwen Hu
From the Department of Laboratory Medicine (Hu, Qin), Shengjing Hospital of China Medical University, and from Department of Laboratory Medicine (Hu, Qin), Liaoning Clinical Research Center for Laboratory Medicine, Shenyang; from the Department of Pediatrics (Liang), Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing; from the Department of Pediatrics (Wen, Chen, Liu, Zhang), Molidawa Daur Autonomous Banner People’s Hospital, Molidawa Daur Autonomous Banner, Hulunbuir, Inner Mongolia Autonomous Region, China.
MM, MA
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Yunmei Liang
From the Department of Laboratory Medicine (Hu, Qin), Shengjing Hospital of China Medical University, and from Department of Laboratory Medicine (Hu, Qin), Liaoning Clinical Research Center for Laboratory Medicine, Shenyang; from the Department of Pediatrics (Liang), Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing; from the Department of Pediatrics (Wen, Chen, Liu, Zhang), Molidawa Daur Autonomous Banner People’s Hospital, Molidawa Daur Autonomous Banner, Hulunbuir, Inner Mongolia Autonomous Region, China.
MD, PhD
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Guiping Wen
From the Department of Laboratory Medicine (Hu, Qin), Shengjing Hospital of China Medical University, and from Department of Laboratory Medicine (Hu, Qin), Liaoning Clinical Research Center for Laboratory Medicine, Shenyang; from the Department of Pediatrics (Liang), Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing; from the Department of Pediatrics (Wen, Chen, Liu, Zhang), Molidawa Daur Autonomous Banner People’s Hospital, Molidawa Daur Autonomous Banner, Hulunbuir, Inner Mongolia Autonomous Region, China.
BS Med, BA
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Dezhong Chen
From the Department of Laboratory Medicine (Hu, Qin), Shengjing Hospital of China Medical University, and from Department of Laboratory Medicine (Hu, Qin), Liaoning Clinical Research Center for Laboratory Medicine, Shenyang; from the Department of Pediatrics (Liang), Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing; from the Department of Pediatrics (Wen, Chen, Liu, Zhang), Molidawa Daur Autonomous Banner People’s Hospital, Molidawa Daur Autonomous Banner, Hulunbuir, Inner Mongolia Autonomous Region, China.
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Yuanjing Liu
From the Department of Laboratory Medicine (Hu, Qin), Shengjing Hospital of China Medical University, and from Department of Laboratory Medicine (Hu, Qin), Liaoning Clinical Research Center for Laboratory Medicine, Shenyang; from the Department of Pediatrics (Liang), Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing; from the Department of Pediatrics (Wen, Chen, Liu, Zhang), Molidawa Daur Autonomous Banner People’s Hospital, Molidawa Daur Autonomous Banner, Hulunbuir, Inner Mongolia Autonomous Region, China.
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Hongmei Zhang
From the Department of Laboratory Medicine (Hu, Qin), Shengjing Hospital of China Medical University, and from Department of Laboratory Medicine (Hu, Qin), Liaoning Clinical Research Center for Laboratory Medicine, Shenyang; from the Department of Pediatrics (Liang), Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing; from the Department of Pediatrics (Wen, Chen, Liu, Zhang), Molidawa Daur Autonomous Banner People’s Hospital, Molidawa Daur Autonomous Banner, Hulunbuir, Inner Mongolia Autonomous Region, China.
BS Med, BA
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Xiaosong Qin
From the Department of Laboratory Medicine (Hu, Qin), Shengjing Hospital of China Medical University, and from Department of Laboratory Medicine (Hu, Qin), Liaoning Clinical Research Center for Laboratory Medicine, Shenyang; from the Department of Pediatrics (Liang), Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing; from the Department of Pediatrics (Wen, Chen, Liu, Zhang), Molidawa Daur Autonomous Banner People’s Hospital, Molidawa Daur Autonomous Banner, Hulunbuir, Inner Mongolia Autonomous Region, China.
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  • For correspondence: [email protected]
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    Figure 1

    - Relationship between monthly serum vitamin D level median and monthly sunshine hours.

Tables

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    Table 1

    - Effect of gender on serum vitamin D level of residents in Molidawa Daur Autonomous Banner.

    Gendern (%)Median (nmol/L)Mann-Whitney test
    UZP-value
    Male2092 (42)63.52243605-15.55<0.001
    Female2890 (58)46.95
    Total4982 (100)53.3
    • View popup
    Table 2

    - Effect of age on serum vitamin D level of residents in Molidawa Daur Autonomous Banner.

    Age groupn (%)Median (nmol/L)Kruskal-Wallis test
    HP-value
    0~3 years1535 (30.8)98.2*,†, ‡, §,**,‡‡2274.8<0.001
    4~6 years‡‡700 (14.05)59.0*,†, ‡, §,**,‡‡
    7~11 years**963 (19.3)46.0*,†, ‡,**
    12~17 years†430 (8.6)36.7†
    18~30 years*790 (15.9)36.2*,†,‡,**
    31~50 years‡464 (9.3)37.9‡
    51~82 years§100 (2.0)44.3*,§
    Minors3628 (72.8)63.5875.3<0.001
    Adults††1254 (25.2)36.7
    Elders§100 (2.0)44.3*,§

    The labels *,†,‡, §,**,††, and ‡‡ indicate that the distribution of median serum vitamin D in different age groups was significantly different after Bonferroni correction (p<0.05/21). The labels § and †† indicate that the distribution of median serum vitamin D in minors, adults, and elders was significantly different after Bonferroni correction (p<0.05/3).

      • View popup
      Table 3

      - Effect of month on serum vitamin D level of residents in Molidawa Daur Autonomous Banner.

      Monthn (%)Median (nmol/L)Kruskal-Wallis test
      HP-value
      January¥379 (7.6)45.25¥354.9<0.001
      February*188 (3.8)39.7*
      March‡411 (8.3)43.6‡
      April§365 (7.3)43.7§
      May†460 (9.2)41.5†
      June††401 (8.1)54.15*,†, ‡,§,††
      July498 (10.0)60.6*,†, ‡,§¥,**
      August585 (11.7)66.3*,†,‡,§,¥,**,‡‡,§§
      September377 (7.6)66.3*,†,‡,§,¥,**,‡‡,§§
      October‡‡432 (8.7)55.05*,†, ‡,§,¥, ‡‡
      November453 (9.1)56.4*,†,‡,§,¥,§§
      December**433 (8.7)51.1*,†,‡,§,**

      The labels *,†, ‡, §, ¥, **, ††, ‡‡, and §§ indicate that the distribution of median serum vitamin D in different months was significantly different after Bonferroni correction (p<0.05/66).

        • View popup
        Table 4

        - Serum vitamin D status varies by gender in different age groups.

        Age groupsGenderTotal numberDeficiency <30 nmol/LInsufficiency 30-50 nmol/LAdequacy >50-250 nmol/LExcess >250 nmol/LMann-Whitney test
        UZP-value
        0~3 yearsMale82426 (3.2)54 (6.6)736 (89.3)8 (1.0)286279.0-1.40.153
        Female71120 (2.8)41 (5.8)634 (89.2)16 (2.3)
        4~6 yearsMale38812 (3.1)102 (26.3)273 (70.4)1 (0.3)54370.0-2.80.005
        Female31228 (9.0)94 (30.1)185 (59.3)5 (1.6)
        7~11 yearsMale56068 (12.1)224 (40.0)266 (47.5)2 (0.4)96615.0-4.2<0.001
        Female40365 (16.1)201 (49.9)137 (34.0)0 (0.0)
        12~17 yearsMale27066 (24.4)134 (49.6)70 (25.9)0 (0.0)16326.0-4.6<0.001
        Female16073 (45.6)64 (40.0)23 (14.4)0 (0.0)
        18~30 yearsMale71 (14.3)3 (42.9)3 (42.9)0 (0.0)1930.5-1.450.182
        Female783261 (33.3)357 (45.6)165 (21.1)0 (0.0)
        31~50 yearsMale244 (16.7)9 (37.5)11 (45.8)0 (0.0)3934.5-2.20.029
        Female440154 (35.0)167 (38.0)118 (26.8)1 (0.2%
        51~82 yearsMale192 (10.5)5 (26.3)12 (63.2)0 (0.0)521.0-2.40.016
        Female8116 (19.8)40 (49.4)25 (30.9)0 (0.0)
        Total4982796(16.0)1495(30.0)2658(53.4)33(0.7)

        Values are presented as number and percentages (%).

          • View popup
          Table 5

          - Serum vitamin D status varies by gender in different months.

          MonthGenderTotal numberDeficiency <30 nmol/LInsufficiency 30-50 nmol/LAdequacy >50-250 nmol/LExcess >250 nmol/LMann-Whitney test
          UZP-value
          JanuaryMale19029 (15.3)74 (38.9)87 (45.8)0 (0.0)16455.0-1.50.132
          Female18951 (27.0)57 (30.2)79 (41.8)2 (1.1)
          FebruaryMale8023 (28.8)23 (28.8)34 (42.5)0 (0.0)3695.0-1.80.075
          Female10840 (37.0)38 (35.2)28 (25.9)2 (1.9)
          MarchMale16229 (17.9)53 (32.7)80 (49.4)0 (0.0)15866.5-3.9<0.001
          Female24986 (34.5)81 (32.5)79 (31.7)3 (1.2)
          AprilMale14822 (14.9)55 (37.2)69 (46.6)2 (1.4)12779.5-3.5<0.001
          Female21769 (31.8)74 (34.1)71 (32.7)3 (1.4)
          MayMale15621 (13.5)53 (34.0)82 (52.6)0 (0.0)16948.5-5.3<0.001
          Female30499 (32.6)116 (38.2)85 (28.0)4 (1.3)
          JuneMale1537 (4.6)38 (24.8)108 (70.6)0 (0.0)14008.0-4.9<0.001
          Female24846 (18.5)85 (34.3)116 (46.8)1 (0.4)
          JulyMale2135 (2.3)41 (19.2)165 (77.5)2 (0.9)22591.0-5.8<0.001
          Female28536 (12.6)93 (32.6)155 (54.4)1 (0.4)
          AugustMale2944 (1.4)43 (14.6)246 (83.7)1 (0.3)33637.5-5.8<0.001
          Female29114 (4.8)95 (32.6)180 (61.9)2 (0.7)
          SeptemberMale1594 (2.5)24 (15.1)131 (82.0)0 (0.0)14247.0-3.7<0.001
          Female21815 (6.9)64 (29.4)136 (62.4)3 (1.4)
          OctoberMale1626 (3.7)31 (19.1)121 (74.7)4 (2.5)15009.5-6.2<0.001
          Female27044 (16.3)95 (35.2)130 (48.1)1 (0.4)
          NovemberMale20610 (4.9)51 (24.8)143 (69.4)2 (1.0)17985.5-6.0<0.001
          Female24754 (21.9)81 (32.8)112 (45.3)0 (0.0)
          DecemberMale16919 (11.2)45 (26.6)105 (62.1)0 (0.0)17640.0-4.0<0.001
          Female26463 (23.9)85 (32.2)116 (43.9)0 (0.0)

          Values are presented as number and percentages (%).

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          Vitamin D status among residents of Molidawa Daur Autonomous Banner, Inner Mongolia, North China
          Jingwen Hu, Yunmei Liang, Guiping Wen, Dezhong Chen, Yuanjing Liu, Hongmei Zhang, Xiaosong Qin
          Saudi Medical Journal Apr 2023, 44 (4) 413-420; DOI: 10.15537/smj.2023.44.4.20220780

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          Vitamin D status among residents of Molidawa Daur Autonomous Banner, Inner Mongolia, North China
          Jingwen Hu, Yunmei Liang, Guiping Wen, Dezhong Chen, Yuanjing Liu, Hongmei Zhang, Xiaosong Qin
          Saudi Medical Journal Apr 2023, 44 (4) 413-420; DOI: 10.15537/smj.2023.44.4.20220780
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          Keywords

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