Male | Female | |||||
School year (age, y) | Rural | Metropolitan | All | Rural | Metropolitan | All |
1 (6) | 96.48 ± 10.11 (17, 151) | 93.78 ± 12.95 (62, 1337) | 94.36 ± 12.39 (80, 1488) | 78.64 ± 9.32 (16, 139) | 83.87 ± 11.21 (68, 1440) | 82.87 ± 11.02 (85, 1579) |
2 (7) | 87.83 ± 6.11 (18, 187) | 90.32 ± 11.72 (68, 1406) | 89.80 ± 10.80 (87, 1593) | 81.33 ± 6.93 (18, 174) | 87.94 ± 11.45 (74, 1552) | 86.65 ± 11.00 (93, 1726) |
3 (8) | 91.18 ± 7.94 (18, 178) | 92.72 ± 10.34 (80, 1806) | 92.44 ± 9.92 (102, 1984) | 86.44 ± 4.70 (19, 165) | 89.45 ± 10.69 (85, 1862) | 88.93 ± 9.96 (107, 2027) |
4 (9) | 93.51 ± 8.60 (19, 207) | 92.50 ± 9.87 (75, 1622) | 92.70 ± 9.59 (98, 1829) | 91.37 ± 6.20 (19, 147) | 92.14 ± 10.76 (82, 1761) | 92.00 ± 10.07 (104, 1908) |
5 (10) | 91.18 ± 7.67 (17, 154) | 91.10 ± 10.92 (77, 1634) | 91.12 ± 10.37 (96, 1788) | 88.19 ± 5.29 (17, 138) | 90.72 ± 11.39 (85, 1862) | 90.30 ± 10.64 (104, 2000) |
6 (11) | 86.55 ± 6.31 (16, 131) | 90.28 ± 9.55 (72, 1552) | 89.60 ± 9.13 (90, 1683) | 88.49 ± 6.15 (16, 130) | 90.57 ± 9.62 (79, 1849) | 90.22 ± 9.13 (97, 1979) |
7 (12) | 82.66 ± 11.73 (16, 137) | 89.30 ± 10.67 (68, 1394) | 88.03 ± 11.12 (86, 1531) | 91.55 ± 7.82 (16, 128) | 91.19 ± 10.66 (75, 1793) | 91.25 ± 10.21 (92, 1921) |
1 - 7 (6 - 12) | 90.05 ± 9.31 (121, 1145) | 91.43 ± 10.88 (502, 10751) | 91.16 ± 10.6 (639, 11896) | 86.54 ± 7.96 (121, 1021) | 89.55 ± 11.05 (548, 12119) | 89.02 ± 10.63 (682, 13140) |