1.1 Draw the epidemic curve (use date of diagnosis). (10 points)

Hint 1: This is the number of cases per unit time (the abscissa is time and the ordinate is number of cases). You have to decide what the best time interval would be (day, week, month, and century) to present the "picture" of the epidemic.

1.2 You may have noticed one date value that seems out of placean outlier or a typo. What is the best thing to do with it? (5 points)

2. What is the shape of this curve (describe in words)? (10 points)

3. How would you describe the seasonality of this disease? (10 points)

4. Draw the same curve for men and for women. Any difference? (15 points)

Same curves, no difference

5. Draw the overall epidemic curve using the date of report (both sexes combined). What are the two major distortions produced by using the date of report? (10 points)

Line listing: reported cases of a disease Year: 2006 Case no. Age Sex Date of dx Date of rpx Clin sx Death 1 37 m 5/30/06 8/15/06 no no 2 33 6/21/06 8/27/06 no no 3 81 m 6/29/06 8/18/06 no no 32 f 7/4/06 9/30/06 no no 79 m 16/06 10/3/06 yes yes ONOUA 37 m 7/10/06 8/16/06 no no 42 f 7/12/06 9/20/06 no no 8 41 m 7/13/06 9/30/06 no no 61 m /18/06 10/13/06 yes no 58 7/18/06 8/20/06 no /19/06 3/22/06 no f 121/06 9/30/06 yes no 7/26/06 1 10/15/06 no no 33 m 7/30/06 11/7/06 no no 74 m 7/31/06 11/25/06 yes yes 7/31/06 11/4/06 no no 13 m 8/2/06 11/18/06 yes no 8/2/06 9/16/06 yes yes 8/3/06 11/13/06 no no m 8/4/06 12/6/06 no no 8/7/06 10/20/06 yes yes 8/8/06 12/11/06 no no 3 - 3/8/06 10/12/06 no no 55 m 8/10/06 10/16/06 yes yes - 3 3/12/06 12/4/06 no no 8/12/06 11/7/06 no no 61 m 8/12/06 9/21/06 yes no28 57 f 8/14/06 12/8/06 yes no 29 61 m 8/14/06 9/30/06 no no 30 52 f 8/14/06 9/22/06 no no 31 53 m 8/18/06 9/20/06 no no 32 34 f 8/19/06 10/24/06 no no 33 79 m 8/20/06 10/26/06 yes yes 34 43 m 8/22/06 10/18/06 no no 35 58 m 8/23/06 10/18/06 yes yes 36 53 m 8/25/06 11/12/06 yes yes 37 61 f 8/25/06 10/14/06 no no 38 65 f 8/27/06 11/21/06 yes no 39 78 m 8/27/06 9/27/06 no no 40 51 m 8/28/06 12/14/06 no no 41 57 m 8/28/06 12/3/06 no no 42 77 m 8/30/06 12/31/06 yes yes 43 69 m 9/2/06 12/7/06 yes yes 44 47 f 9/2/06 10/21/06 no no 45 51 f 9/4/96 12/13/96 no no 46 53 m 9/5/06 1/10/07 no no 47 76 m 9/6/06 10/17/06 yes no 48 48 m 9/7/06 12/31/06 no no 49 52 1 9113/06 12/3/06 no no 50 57 m 9/14/06 1/4/07 no no 51 61 f 9/27/06 12/31/06 yes no 52 64 m 10/5/06 11/8/06 no no Census da1a: Queens County, New York. 2010 Census Under 5 years 132,464 510 9 years 123,766 1010 14 years 123,406 15 to 19 years 139,096 20 to 24 years 160,875 25 to 29 years 184,917 30 to 34 years 177,213 3510 39 years 164,355 40 to 44 years 161,924 45 to 49 years 163,851 5010 54 years 159,033 Census da1a: 2010 Census Queens County, New York, Under 5 years 5 to 9 years 10 to 14 years 132,464 123,766 123,406 15 to 19 years 139,096 20 to 24 years 25 lo 29 years 30 to 34 years 160,875 184,917 177,213 35 to 39 years 164,355 40 to 44 years 161,924 45 to 49 years 163,851 50 to 54 years 159,033 55 lo 59 years 137,184 60 to 64 years 65 to 69 years 70 to 74 years 116,492 75 to 79 years 80 lo 84 years 85 years and over