Table 2 Sensitivity, specificity and their 95% confidence intervals (CI)* of education level recorded in death certificates using education reported in National Health and Nutrition Examination Survey (NHANES) of South Korea as the gold standard (N = 511)
From: Consistency between education reported in health survey and recorded in death certificate
Education | N | Sensitivity (95% CI) | N | Specificity (95% CI) | N | Sensitivity (95% CI) | N | Specificity (95% CI) |
|---|---|---|---|---|---|---|---|---|
All subjects | ||||||||
College or higher | 31 | 0.84 (0.71–0.97) | 480 | 0.99 (0.98–1.00) | ||||
High and middle school | 114 | 0.77 (0.69–0.85) | 397 | 0.92 (0.90–0.95) | ||||
High school | 60 | 0.70 (0.58–0.82) | 451 | 0.95 (0.93–0.97) | ||||
Middle school | 54 | 0.46 (0.33–0.60) | 457 | 0.94 (0.91–0.96) | ||||
Elementary school or less | 366 | 0.93 (0.90–0.96) | 145 | 0.84 (0.78–0.90) | ||||
Elementary school | 147 | 0.67 (0.59–0.74) | 364 | 0.82 (0.79–0.86) | ||||
No education | 219 | 0.78 (0.72–0.83) | 292 | 0.89 (0.86–0.93) | ||||
Men | Women | |||||||
College or higher | 26 | 0.81 (0.66–0.96) | 270 | 0.99 (0.97–1.00) | 5 | 1.00 (1.00–1.00) | 210 | 1.00 (1.00–1.00) |
High and middle school | 100 | 0.80 (0.72–0.88) | 196 | 0.90 (0.86–0.94) | 14 | 0.57 (0.31–0.83) | 201 | 0.95 (0.92–0.98) |
High school | 51 | 0.71 (0.58–0.83) | 245 | 0.93 (0.89–0.96) | 9 | 0.67 (0.36–0.97) | 206 | 0.98 (0.96–1.00) |
Middle school | 49 | 0.49 (0.35–0.63) | 247 | 0.91 (0.88–0.95) | 5 | 0.20 (0.00–0.55) | 210 | 0.97 (0.94–0.99) |
Elementary school or less | 170 | 0.91 (0.86–0.95) | 126 | 0.87 (0.81–0.92) | 196 | 0.95 (0.92–0.98) | 19 | 0.68 (0.48–0.89) |
Elementary school | 97 | 0.69 (0.60–0.78) | 199 | 0.80 (0.75–0.86) | 50 | 0.62 (0.49–0.75) | 165 | 0.85 (0.79–0.90) |
No education | 73 | 0.64 (0.53–0.75) | 223 | 0.92 (0.88–0.96) | 146 | 0.84 (0.78–0.90) | 69 | 0.81 (0.72–0.90) |
Ages 20–64 | Ages 65 | |||||||
College or higher | 23 | 0.83 (0.67–0.98) | 176 | 0.99 (0.97–1.00) | 8 | 0.88 (0.65–1.00) | 304 | 0.99 (0.98–1.00) |
High and middle school | 82 | 0.77 (0.68–0.86) | 117 | 0.85 (0.78–0.91) | 32 | 0.78 (0.64–0.92) | 280 | 0.96 (0.93–0.98) |
High school | 44 | 0.80 (0.68–0.91) | 155 | 0.90 (0.86–0.95) | 16 | 0.44 (0.19–0.68) | 296 | 0.98 (0.96–0.99) |
Middle school | 38 | 0.45 (0.29–0.61) | 161 | 0.91 (0.87–0.96) | 16 | 0.50 (0.26–0.75) | 296 | 0.95 (0.92–0.97) |
Elementary school or less | 94 | 0.84 (0.77–0.91) | 105 | 0.83 (0.76–0.90) | 272 | 0.96 (0.94–0.98) | 40 | 0.88 (0.77–0.98) |
Elementary school | 67 | 0.69 (0.58–0.80) | 132 | 0.80 (0.73–0.86) | 80 | 0.65 (0.55–0.75) | 232 | 0.84 (0.79–0.89) |
No education | 27 | 0.52 (0.33–0.71) | 172 | 0.94 (0.91–0.98) | 192 | 0.81 (0.76–0.87) | 120 | 0.83 (0.76–0.89) |
Duration between health survey and death, 3.4 years or less | Duration between health survey and death, 3.5–7.1 years | |||||||
College or higher | 6 | 1.00 (1.00–1.00) | 249 | 1.00 (0.99–1.00) | 25 | 0.80 (0.64–0.96) | 231 | 0.99 (0.97–1.00) |
High and middle school | 60 | 0.80 (0.70–0.90) | 195 | 0.92 (0.89–0.96) | 54 | 0.74 (0.62–0.86) | 202 | 0.93 (0.89–0.96) |
High school | 33 | 0.67 (0.51–0.83) | 222 | 0.95 (0.92–0.98) | 27 | 0.74 (0.58–0.91) | 229 | 0.95 (0.92–0.98) |
Middle school | 27 | 0.44 (0.26–0.63) | 228 | 0.92 (0.89–0.96) | 27 | 0.48 (0.29–0.67) | 229 | 0.95 (0.92–0.98) |
Elementary school or less | 189 | 0.92 (0.88–0.96) | 66 | 0.83 (0.74–0.92) | 177 | 0.94 (0.90–0.97) | 79 | 0.85 (0.77–0.93) |
Elementary school | 73 | 0.66 (0.55–0.77) | 182 | 0.81 (0.75–0.86) | 74 | 0.68 (0.57–0.78) | 182 | 0.84 (0.79–0.89) |
No education | 116 | 0.77 (0.69–0.84) | 139 | 0.91 (0.86–0.95) | 103 | 0.79 (0.71–0.87) | 153 | 0.88 (0.83–0.93) |