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[Solution Library] Otitis media is a disease that occurs frequently in the first few years of life and is one of the most common reasons for physician visits after the

Question: Otitis media is a disease that occurs frequently in the first few years of life and is one of the most common reasons for physician visits after the routine checkup. A study was conducted to assess the frequency of otitis media in 2500 infants in the first 6 months of life. The column second of Table 1, shows the number of infants who were first seen at birth and remained disease-free by the end of the i th month of life, where i = 0, 1, ... 6 months. Please complete the last three columns, reporting 4 decimal places for proportions. (2 points total; 1 point for 6 th column and 1point for the 7 th and 8 th column)

Table 1. Life table of 2500 infants who remained disease-free by the end of the i th month of life

n i w i d i q i =d i /[n i -( w i /2)] p i =1-q i s i= p i p i-1 p i-2 …p 1
Interval Start time (i) Number Entering this Interval Number of withdrawn During Interval Number exposed to Risk Number of Terminal Events Proportion Terminating Proportion Surviving Cum Proportion
Survival at End
0 2500 55 2490 20
1 2425 40 2400 10
2 2375 60 2370 15
3 2300 80 2290 40
4 2180 130 2090 50
5 2000 90 1800 35
6 1875 80 1750 20

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