Article Figures & Data
- Figure 1.
Screening process and RA diagnosis. RA: rheumatoid arthritis; CCP: cyclic citrullinated peptide; RF: rheumatoid factor; ACR: American College of Rheumatology; EULAR: European League Against Rheumatism.
- Figure 2.
Flow diagram of the study population.
- Table 1.
Demographic characteristics of the general sample of the Chilean National Health Survey.
Demographic Characteristics % (95% CI) N* Sex Female 52.1 (49.0–55.2) 1931 Male 47.9 (44.8–51.0) 1057 Age, yrs Mean 51.8 (50.9–52.7) 2988 31–40 27.2 (24.2–30.4) 521 41–50 22.5 (19.9–25.3) 559 51–60 24.1 (21.6–26.9) 705 61–70 13.8 (12.0–15.8) 607 71+ 12.4 (10.7–14.3) 596 Educational level Low 22.9 (20.3–25.6) 901 Medium 55.1 (51.5–58.6) 1548 High 21.7 (18.6–25.1) 515 Missing 0.4 (0.2–0.8) 24 Working status Paid employment 58.7 (55.5–61.8) 1432 Unemployed 2.6 (1.6–4.0) 66 Housewife 19.9 (17.7–22.4) 615 Retired 15.6 (13.7–17.6) 760 Permanently disabled 1.6 (1.0–2.4) 51 Student 0.6 (0.3–1.3) 15 Other 1.1 (0.7–1.7) 41 Missing 0.1 (0.0–0.3) 8 Marital status Married 50.1 (46.8–53.3) 1336 Single 19.1 (16.6–22.0) 556 Stable couple 13.3 (11.2–15.8) 280 Separated/divorced 10.2 (8.6–12.1) 395 Widow 7.2 (6.0–8.5) 415 Missing 0.1 (0.0–0.3) 6 Geographic zone Urban 86.9 (85.1–88.5) 2460 Rural 13.1 (11.5–14.9) 528 ↵* N corresponds to the absolute number of subjects without applying sampling weights.
- Table 2.
Demographic characteristics of subjects with RA identified in the Chilean National Health Survey.
Demographic Characteristics % or Mean (95% CI) N Sex Female 89.4 (66.0–97.3) 27 Male 10.6 (2.7–34.0) 4 Age, yrs Mean 53.6 (43.3–64.0) 31 31–54 50.4 (21.9–78.7) 8 55+ 49.6 (21.3–78.2) 23 Educational level Low 27.4 (11.1–53.2) 13 Medium 21.8 (9.0–44.0) 14 High 42.6 (14.6–76.2) 2 Missing 8.3 (1.6–33.3) 2 Working status Paid employment 28.1 (6.5–68.9) 4 Unemployed 0.5 (0.1–4.1) 1 Housewife 33.5 (10.6–68.0) 9 Retired 14.3 (5.1–33.9) 10 Permanently disabled 17.4 (6.0–40.7) 6 Other 6.3 (0.8–34.8) 1 Marital status Married 69.6 (43.4–87.3) 13 Single 14.5 (5.0–35.1) 7 Stable couple 1.2 (0.2–8.3) 2 Separated/divorced 7.7 (1.8–27.7) 4 Widow 7.0 (1.5–26.5) 5 Geographic zone Urban 94.5 (81.6–98.5) 28 Rural 5.5 (1.5–18.4) 3 RA: rheumatoid arthritis.
Variables Estimate Cases N* Total 0.6 (0.3–1.2) 31 2988 Sex Male 0.1 (0.0–0.5) 4 1057 Female 1.0 (0.5–2.1) 27 1931 Age, yrs 31–54 0.5 (0.2–1.6) 8 1349 55+ 0.8 (0.5–1.3) 23 1639 Educational level Low 0.7 (0.4–1.5) 13 901 Middle 0.2 (0.1–0.5) 14 1548 High 1.2 (0.3–4.7) 2 515 Civil status Married 0.8 (0.3–2.0) 13 1336 Single 0.5 (0.2–1.1) 7 556 Stable couple 0.1 (0.0–0.4) 2 280 Separated/divorced 0.5 (0.1–1.8) 4 395 Widow 0.6 (0.1–2.4) 5 415 Work status Paid employment 0.3 (0.1–1.4) 4 1432 Unemployed 0.1 (0.0–0.9) 1 66 Housewife 1.0 (0.3–3.4) 9 615 Retired 0.6 (0.2–1.3) 10 760 Permanently disabled 6.6 (2.5–16.3) 6 51 Student 0 0 15 Other 3.4 (0.5–21.1) 1 41 Area of residence Urban 0.7 (0.3–1.3) 28 2460 Rural 0.3 (0.1–0.8) 3 528 ↵* N corresponds to the denominator in prevalence calculations. RA: rheumatoid arthritis.
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