フリーキーワードによる検索式のため、唯一の正解というわけではありませんが、ひとつの検索例をご紹介します。
S INEFFECT? OR ABOLISH? OR INVALID? OR (NO? ? OR WITHOUT)(5N)EFFECT?/TI,AB
薬剤を投与したことを表す「薬物治療」 「投与量」 「投与経路」のようなサブヘディングを掛け合わせると、ノイズを減らすことができます。
【検索例：アスピリンの無効事例】
? S INEFFECT? OR ABOLISH? OR INVALID? OR (NO? ? OR WITHOUT)(5N)EFFECT?/TI,AB
67996 INEFFECT?
171463 ABOLISH?
10968 INVALID?
10055393 NO? ?/TI,AB
1709700 WITHOUT/TI,AB
5937528 EFFECT?/TI,AB
959895 (NO? ?/TI,AB OR WITHOUT/TI,AB)(5N)EFFECT?/TI,AB
S1 1166336 INEFFECT? OR ABOLISH? OR INVALID? OR (NO? ? OR
WITHOUT)(5N)EFFECT?/TI,AB
? S (ASPIRIN(L)(AD OR TU) OR (ASPIRIN/DF AND DT/DF)) AND S1 FROM 154
19874 ASPIRIN/DE
679561 AD/DE
1017784 TU/DE
13223 ASPIRIN/DE(L)(AD/DE OR TU/DE)
19847 ASPIRIN/DF
1007747 DT/DF
584208 S1
S2 1307 (ASPIRIN(L)(AD OR TU) OR (ASPIRIN/DF AND DT/DF)) AND S1
FROM 154
? S ACETYLSALICYLIC ACID(L)(AD OR DT OR DO) AND S1 FROM 72
93270 ACETYLSALICYLIC ACID/DE
255010 AD/DE
1958605 DT/DE
455459 DO/DE
59469 ACETYLSALICYLIC ACID/DE(L)((AD/DE OR DT/DE) OR DO/DE)
582128 S1
S3 3158 ACETYLSALICYLIC ACID(L)(AD OR DT OR DO) AND S1 FROM 72
? S S2 OR S3
1307 S2
3158 S3
S4 4465 S2 OR S3
? RD
Processing - Examined 1000 records
Processing - Examined 2000 records
Processing - Examined 3200 records
Processing - Examined 4400 records
S5 3698 RD (unique items)
? DS S4-S5 FROM EACH
Set File Items Description
154 1307
72 3158
S4 4465 S2 OR S3
154 1303
72 2395
S5 3698 RD (unique items)
ヒットした部分の文脈を出力（形式Ｋ：KWIC）してみると…
...stent thrombosis, the platelet function during DAT was measured.
The result showed that he did not achieve an adequate antiplatelet eff
ect. Clopidogrel is a prodrug that requires biotransformation by cytoc
hrome P450 (CYP) enzyme in the liver...
...formation in response to collagen, but not U46619. Parecoxib inhi
bited only COX-2 and had no effect upon thrombus formation caused by e
ither agonist. Inhibition of COX-1 by diclofenac or aspirin...
...and dogs, an activity which parallels its antithrombotic potency
in these species. Although apixaban has no direct effects on platelet
aggregation, it indirectly inhibits this process by reducing thrombin
generation.Pre-clinical studies...
