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Author/year/country | Population/age/vitamin D level | Intervention | Duration | 25OHD before treatment(g/ml) | 25OHD after treatment (ng/ml) | Hyperandrogenism | Insulin resistance | Dyslipidemia | Inflammation |
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Seyyed et al., (2017) Iran [19] | 36 women with PCOS, aged 20–38 years, 25OHD < 20 ng/ml | G1: 50,000 IU/week of oral vitamin D3 (n = 19); G2: placebo (n = 17) | 8 weeks | G1: 3.5 ± 4.2; G2: 9.8 ± 5.1 | 28.24 ± 6.47; 13.3 ± 7.1 | | ↓FPG ↔HOMA-IR, QUICKI | | |
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Asemi et al., (2017) Iran [21] | 104 overweight and obese women with PCOS, aged 18–40 years, 25OHD < 20 ng/ml | G1: 1000 mg/d calcium + vitamin D placebo (n = 26); G2: 50,000 IU/week vitamin D + calcium placebo (n = 26); G3: 1000 mg/d calcium+ 50,000 IU/week vitamin D (n = 26); G4: calcium placebo + vitamin D placebo (n = 26) | 8 weeks | G1: 13.9 ± 2.0; G2: 11.6 ± 4.7; G3: 15.1 ± 3.6; G4: 14.0 ± 4.1 | 71.2 ± 14.7; 86.8 ± 16.1; 76.4 ± 13.3; 73.5 ± 23.8 | | ↓insulin, HOMA-IR, ↑QUICKI ↔FPG | ↓TG, VLDL-C ↔TC, LDL-C, HDL-C | 8 weeks |
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Bonakdaran et al., (2012) Iran [26] | 48 women with PCOS, aged 20–40 years, 25OHD < 20 ng/ml | G1: 1000 mg/d metformin (n = 17); G2: 0.5ug/d calcitriol (n = 15); G3: placebo (n = 16) | 12 weeks | G1:28.2 ± 13.5; G2:11.4 ± 8.2; G3:19.9 ± 16.5; | 26.7 ± 10.6; 20.1 ± 16.2; 19.0 ± 15.3 | ↔Total testosterone, DHEAS | ↔FPG, insulin, HOMA-IR | | |
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Foroozanfard et al., (2015) Iran [22] | 104 overweight women with PCOS who have vitamin D deficiency, aged 18–40 years, 25OHD < 20 ng/ml | G1: 1000 mg calcium/d plus vitamin D placebo weekly (n = 26); G2: 50,000 IU/week vitamin D plus calcium placebo daily (n = 26); G3: 1000 mg/d calcium plus 50,000 IU vitamin D weekly (n = 26); G4: calcium placebo daily plus vitamin D placebo weekly (n = 26) | 8 weeks | | G1: +0.3 ± 0.4; G2: +12.5 ± 1.1; G3: +9.2 ± 1.5; G4: +0.2 ± 0.6 | | | | ↓hs-CRP |
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Gupta et al., (2017) India [27] | 50 women with PCOS, aged 18–45 years, 25OHD < 30 ng/ml | G1: 12000 IU/week vitamin D (n = 25); G2: placebo (n = 25) | 12 weeks | G1: 18.56 ± 9.68; G2: Vacant | 44.90 ± 9.04; vacant | ↔-Total testosterone, DHEAS | ↓FPG, insulin, HOMA-IR ↑ QUICKI | ↔TG, TC, HDL-C | |
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Rahimi-Ardabili et al., (2013) Iran [25] | 50 women with PCOS, aged 20–40 years, 25OHD < 20 ng/ml | G1: 50,000 IU/20 days of oral cholecalciferol (n = 24); G2: placebo (n = 26) | 8 weeks | G1:6.9 ± 2.8; G2:7.28 ± 2.93 | 23.4 ± 6.14; 8.57 ± 3.98 | | | ↓ TC ↔TG, LDL-C, HDL-C, VLDL-C | ↓hs-CRP |
Javed et al. (2019) UK [30] | 37 women with PCOS, aged 18–45 years, 25OHD < 20 ng/ml | G1: 3200IU/day vitamin D (n = 18); G2: placebo (n = 19) | 12 weeks | G1:10.26 ± 4.57; G2:12.38 ± 4.45 | 36.22 ± 7.81; 19.07 ± 8.21 | ↔Total testosterone, SHBG | ↔FPG, insulin, HOMA-IR | ↔TG, TC, LDL-C, HDL-C | ↔ hs-CRP |
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Irani et al., (2015) USA [31] | 53 women with PCOS, aged 18–38 years, 25OHD <20 ng/ml | G1: 50,000 IU/week of oral vitamin D3 (n = 35); G2: placebo (n = 18) | 8 weeks | G1: 16.3 ± 0.9; G2: 17 ± 1.8 | 43.2 ± 2.4; 17.4 ± 1.9 | ↔Total testosterone, SHBG | ↔ HOMA-IR | ↓TG ↔HDL-C, LDL-C | |
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Maktabi et al., (2017) Iran [24] | 60 women with PCOS, aged 18–40 years, 25OHD < 20 ng/ml | G1: 50,000 IU/2 weeks of oral vitamin D3 (n = 30); G2: placebo (n = 30) | 12 weeks | G1: 12.8 ± 4.5; G2: 14.5 ± 5.1 | 27.5 ± 9.8; 14.4 ± 5.2 | ↔Total testosterone, SHBG, DHEAS | ↓FPG, insulin, HOMA-IR, QUICKI | ↔TG, TC, LDL-C, HDL-C, VLDL-C | ↓hs-CRP |
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Jorly Mejia-Montilla et al., (2018) Venezuela [29] | 169 women with PCOS, aged 20–40 years, 25OHD < 20 ng/ml | G1: 5000 IU/day vitamin D (n = 84); G2: placebo (n = 85) | 12 weeks | G1:13.7 ± 4.2; G2:13.5 ± 4.4 | 19.1 ± 4.9; 13.3 ± 4.5 | | ↓FPG, insulin, HOMA-IR | ↓TG, TC, LDL-C ↔HDL-C | |
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Ardabili et al., (2012) Iran [20] | 50 women with PCOS, aged 20–40 years, 25OHD < 20 ng/ml | G1:50,000 IU of oral vitamin D3 every 20 days (n = 24); G2: placebo (n = 26) | 8 weeks | G1: 6.9 ± 2.8; G2: vacant | 23.4 ± 6.1; vacant | | ↔FPG, insulin, HOMA-IR, QUICKI | | |
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Jafari-Sfidvajani et al., (2017) Iran [23] | 56 women with PCOS, aged 20–40 years, 25OHD < 20 ng/ml | G1: low-calorie diet+ 50,000 IU/week oral vitamin D3 (n = 26); G2: low-calorie diet + placebo (n = 28) | 12 weeks | G1: 15.83 ± 4.85; G2: 14.93 ± 5.55 | 43.38 ± 12.61; 25.32 ± 10.13 | ↔Total testosterone, DHEAS, SHBG | | | |
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Trummer et al., (2018) Austria [28] | 123 women with PCOS, aged ≥ 18 years, 25OHD < 30 ng/ml | G1:20,000 IU of oral vitamin D3/week (n = 81); G2: placebo (n = 42) | 24 weeks | G1: 19.55 ± 6.73; G2: 19.55 ± 7.01 | 36.14 ± 8.05; 22.76 ± 11.82 | ↔Total testosterone | ↔ FPG, HOMA-IR, QUICKI | ↔TG, TC | |
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