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. Author manuscript; available in PMC: 2024 Sep 4.
Published in final edited form as: Birth Defects Res. 2024 Aug;116(8):e2390. doi: 10.1002/bdr2.2390

TABLE 3 |.

Prevalence and unadjusted and adjusted prevalence ratios of red blood cell folate insufficiency among non-pregnant and non-lactating women of reproductive age, 18–49 years, Ambala District, Haryana, India.

RBC folate insufficiency (<748 nmol/L)
Characteristic n (unweighted) Prevalence (95% CI) Unadjusted prevalence ratio (95% CI) Adjusted prevalence ratio (95% CI)a
Total 775 78.3 (75.0, 81.3)
Age (years)
  18–29 249 90.2 (85.0, 93.7) Referent Referent
  30–39 307 76.6 (71.0, 81.5) 0.85 (0.78, 0.92) 0.92 (0.83, 1.02)
  40–49 219 67.8 (60.6, 74.3) 0.75 (0.67, 0.84) 0.84 (0.74, 0.95)
Religion
  Hinduism 693 79.1 (75.7, 82.2) Referent
  Islam 22 77.2 (53.9, 90.7) 0.98 (0.76, 1.25)
  Sikhism 60 70.2 (54.8, 82.1) 0.89 (0.72, 1.09)
Caste
  General 229 75.3 (68.5, 81.0) Referent
  Scheduled (caste, tribe) 279 77.4 (71.6, 82.3) 1.03 (0.92, 1.15)
  Other backward classes 267 81.6 (75.7, 86.2) 1.08 (0.97, 1.20)
Education
  None 160 78.9 (70.9, 85.2) Referent
  Primary 155 78.0 (70.0, 84.4) 0.99 (0.87, 1.13)
  Secondary 291 79.7 (74.3, 84.2) 1.01 (0.90, 1.13)
  Higher secondary and above 137 78.2 (69.7, 84.8) 0.99 (0.87, 1.13)
Occupation
  Earning 248 77.1 (70.9, 82.4) Referent
  Non-earning 513 79.1 (74.9, 82.8) 1.03 (0.94, 1.12)
Marital status
  Never married 109 94.7 (85.3, 98.2) Referent
  Married 620 75.7 (71.8, 79.2) 0.80 (0.74, 0.86)
  Divorced/widowed/separated 46 76.3 (61.6, 86.6) 0.81 (0.68, 0.96)
Parity
  Nulliparous 145 95.5 (88.5, 98.4) Referent Referent
  Primiparous 79 78.6 (66.1, 87.4) 0.82 (0.71, 0.95) 0.79 (0.67, 0.94)
  Multiparous 551 74.0 (69.8, 77.8) 0.77 (0.72, 0.83) 0.82 (0.74, 0.90)
Diet
  Vegetarian 670 78.8 (75.3, 82.0) Referent
  Eggetarian 36 87.5 (72.4, 95.0) 1.11 (0.98 1.26)
  Non-vegetarian 69 69.8 (56.5, 80.4) 0.88 (0.74, 1.06)
Having a ration card
  Yes 755 78.1 (74.7, 81.1) 0.89 (0.76, 1.05)
  No 20 87.6 (67.2, 96.0) Referent
Ration card category
  Below poverty line 277 80.4 (74.9, 85.0) Referent
  Above poverty line 477 76.6 (72.1, 80.6) 0.95 (0.88, 1.04)
  No ration card 20 87.6 (67.2, 96.0) 1.09 (0.92, 1.29)
PDS wheat purchase
  Yes 497 79.8 (75.7, 83.3) 0.91 (0.78, 1.07)
  No 255 74.7 (68.1, 80.3) 0.85 (0.72, 1.02)
  No ration card 20 87.6 (67.2, 96.0) Referent
Folic acid supplement use
  Yes 23 48.3 (27.5, 69.6) 0.61 (0.38, 0.97) 0.58 (0.34, 0.99)
  No 752 79.4 (76.1, 82.4) Referent Referent
Vitamin B12 supplement use
  Yes 20 62.7 (37.7, 82.3) 0.80 (0.54, 1.17)
  No 755 78.8 (75.4, 81.8) Referent

Note: Statistically significant results are bolded.

Abbreviations: 95% CI, 95% confidence interval; PDS, public distribution system; RBC, red blood cell.

a

Adjusted for age, parity, and folic acid use.