Gray Hair Observations and Age at Examination TABLE 5 Age at (by Sex, Exposure Group) Group 1 examination O + Group 2 +4++4+4++Totei! 0 + Group 3 44++4+4+Total| 0 + Group 4 4FE+4++Totel| 0 + +4++-4++ Total Male 15-19 2 2] 13 13) 4 4) 13 13 20-24 5 5 9 9 7 7 5 3 25-29 & 30-34 H 8:17 35-39 6 40-44 4 4 45-49 4 5 50-54 3 3 2 55-59 } 3 4 60-64 1 7 8 . 1 65-69 1 5 1 70-74 2 1 2 775+ Total 45 27 2 1 7 [11 i 8 13 12 12 9 9 12 6 4 4 2 1 3 3 1 4 8 4 2 1 7 5 3 8) 11 2 13 11 4 3 1 8 5 2 7 5 6 i] 9 2 10 6 I 19 5 4 2 11 1 6 8 2 7 7 2 18 3 5 4 12 I 1 6 17 6 4 3 13 3 5 19 1 7 3 1 12 7 3 4 1 8 2 6 8 1 2 2 2 7 3 1 5 2 8 1 3 4 1 | 2 3 ] 4 T 1 31 10 140] 51 7 06 1 1 2 23 4 99! 6&7 32 21 2 1 3 4 21 5 98 61 i 9 12 26 2 9 8 12 Female 15-19 8 8 16 16 10 10 9 9 20-24 5 5 19 19 16 16 6 6 25-29 16 16 12 12 8 8 8 8 30-34 33 33 28 28 10 1 | 20 1 28 15 5) a1 1 12 34] 14 7 1 22 +10 1 11 16 1 19 28 40-44 35-39 | 14 18 2 1 V7 29 5 45-49 13 6 2 2t 23 7T 3 33} 12 & 2 22 9 6 ] 50-54 9 6 6 1 22 18 #10 9 37 8 5 6 19 4 3 3 1 24 5 #611 9 2 31 2 1 7 12 10 3 25 3 6 3 4 3 10 1 2 3 42 10 287 55-59 4 6 13 60-64 1 5 8 65-69 1 2 7 1 11 70-74 1 5 2 8 1 1 2 44 6 200; 75+ Total 1230 27 14 GERIATRICS, JANUARY 2 184 1961 51 | 1t |]95 21 1 ] 3 6 7 7 2 19 4 16 7 7 1 15 4 8 2 14 | 2 1 4 4 1 5 1 IT 1 3 3 1 4 (27 5 1 1 30 39 2 7 #171 84 250 21 33 141