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Table 1 Prevalence and 95% confidence interval of fertility status based on demographic variables

From: Association between dietary inflammatory index and infertility of women; Results from RaNCD Cohort Study

Variable

Subgroup

Number

Infertility

P-value *

DII

Q1 (<-2.02)

361

4.16 (2.52 to 6.78)

< 0.001

Q2 (-2.02, -1.02)

568

7.30 (5.33 to 9.91)

Q3 (-1.03, 0.25)

984

7.52 (6.03 to 9.34)

Q4 (≥ 0.26)

2524

10.97 (9.81 to 12.26)

Educational level

Illiterate

1521

6.25 (5.13 to 7.58)

< 0.001

1–5 years

2119

10.01 (8.80 to 11.36)

6–9 years

451

13.75 (10.86 to 17.25)

10–12 years

238

10.92 (7.54 to 15.57)

≥ 13 years

108

14.81 (9.26 to 22.87)

Socioeconomic status

Q1 (Poorest)

1042

8.64 (7.08 to 10.50)

0.890

Q2

1128

9.22 (7.66 to 11.05)

Q3

1125

9.24 (7.68 to 11.08)

Q4

815

10.06 (8.17 to 12.33)

Q5 (Richest)

327

9.48 (6.74 to 13.17)

Alcohol drinking

No

4333

9.25 (8.43 to 10.14)

0.277

Yes

104

25.01 (2.38 to 81.99)

Use contraceptive

No

1063

12.07 (9.78 to 14.34)

< 0.001

Yes

3374

9.18 (8.66 to 9.68)

Residency

City

2636

11.95 (10.77 to 13.25)

< 0.001

Village

1801

5.33 (4.38 to 6.47)

Physical activity

Light (MET < 3)

897

11.61 (9.67 to 13.88)

0.001

Moderate (MET 3–6)

3079

9.13 (8.16 to 10.20)

Intense (MET ≥ 6)

461

5.64 (3.87 to 8.16)

Total

4437

9.26 (8.44 to 10.15)

-

  1. Note: *P-value was obtained by the Chi-square test and P<0.05 were considered as statistically significant