expdesgn
General Social Survey https://gss.norc.org
Question 1041. Now, please think about this situation. Two scientists want to know if a certain drug is effective against high blood pressure. The first scientist wants to give the drug to one thousand people with high blood pressure and see how many of them experience lower blood pressure levels. The second scientist wants to give the drug to five hundred people with high blood pressure, and not give the drug to another five hundred people with high blood pressure, and see how many in both groups experience lower blood pressure levels. Which is the better way to test this drug?
For further details see the official GSS documentation.
Counts by year:
| year | iap | 500 get the drug; 500 don't | all 1000 get the drug | don't know | no answer | Total |
| 1972 | 1613 | - | - | - | - | 1613 |
| 1973 | 1504 | - | - | - | - | 1504 |
| 1974 | 1484 | - | - | - | - | 1484 |
| 1975 | 1490 | - | - | - | - | 1490 |
| 1976 | 1499 | - | - | - | - | 1499 |
| 1977 | 1530 | - | - | - | - | 1530 |
| 1978 | 1532 | - | - | - | - | 1532 |
| 1980 | 1468 | - | - | - | - | 1468 |
| 1982 | 1860 | - | - | - | - | 1860 |
| 1983 | 1599 | - | - | - | - | 1599 |
| 1984 | 1473 | - | - | - | - | 1473 |
| 1985 | 1534 | - | - | - | - | 1534 |
| 1986 | 1470 | - | - | - | - | 1470 |
| 1987 | 1819 | - | - | - | - | 1819 |
| 1988 | 1481 | - | - | - | - | 1481 |
| 1989 | 1537 | - | - | - | - | 1537 |
| 1990 | 1372 | - | - | - | - | 1372 |
| 1991 | 1517 | - | - | - | - | 1517 |
| 1993 | 1606 | - | - | - | - | 1606 |
| 1994 | 2992 | - | - | - | - | 2992 |
| 1996 | 2904 | - | - | - | - | 2904 |
| 1998 | 2832 | - | - | - | - | 2832 |
| 2000 | 2817 | - | - | - | - | 2817 |
| 2002 | 2765 | - | - | - | - | 2765 |
| 2004 | 2812 | - | - | - | - | 2812 |
| 2006 | 2646 | 1476 | 314 | 70 | 4 | 4510 |
| 2008 | 518 | 1115 | 279 | 93 | 18 | 2023 |
| 2010 | 1328 | 571 | 99 | 36 | 10 | 2044 |
| 2012 | 972 | 791 | 134 | 66 | 11 | 1974 |
| 2014 | 1299 | 952 | 215 | 67 | 5 | 2538 |
| 2016 | 1477 | 1098 | 233 | 49 | 10 | 2867 |
| 2018 | 1173 | 903 | 222 | 39 | 11 | 2348 |
| 2021 | 4032 | - | - | - | - | 4032 |
| 2022 | 3544 | - | - | - | - | 3544 |
| Total | 63499 | 6906 | 1496 | 420 | 69 | 72390 |
1 all 1000 get the drug
2 500 get the drug; 500 don't
NA(d) don't know
NA(i) iap
NA(j) I don't have a job
NA(m) dk, na, iap
NA(n) no answer
NA(p) not imputable
NA(q) not imputable
NA(r) refused
NA(s) skipped on web
NA(u) uncodeable
NA(x) not available in this release
NA(y) not available in this year
NA(z) see codebook