| RRI | recurrent respiratory infection; reflex relaxation index; relative response index |
|---|---|
| SFI | Sexual Function Index; Social Function Index |
| TBI | thyroid-binding index; thyroxine-binding index; tooth-brushing instruction; total-body irradiation; ... |
| TI | inversion time; temporal integration; terminal ileum; thalassemia intermedia; therapeutic index; tho... |
| TLI | thymidine labeling index; total lymphatic irradiation; trypsin-like immune activity; Tucker-Lewis in... |
| orbital index | Relation of the height of the orbit to its width: (orbital height × 100)/orbital width. (05 Mar 2000) |
|---|---|
| orbitonasal index | The ratio of the width between the lateral angles of the eyes, measured with a tape measure passing over the root of the nose times 100, to the width between the lateral angles of the eyes measured with a caliper. (05 Mar 2000) |
| therapeutic index | The ratio of LD50 to ED50, used in quantitative comparison of drugs. (05 Mar 2000) |
| thoracic index | Anteroposterior diameter of the thorax times 100 divided by the transverse diameter of the thorax. Synonym: chest index. (05 Mar 2000) |
| tibiofemoral index | The ratio obtained by multiplying the length of the tibia by 100 and dividing by the length of the femur. (05 Mar 2000) |
| effective temperature index | A composite index of environmental comfort which is compared after exposure to different combinations of air temperature, humidity, and movement. (05 Mar 2000) |
| total facial index | Length is measured from the nasion to the mental tubercle: (nasimental length × 100)/bizygomatic width. (05 Mar 2000) |
| empathic index | The degree of emotional understanding or empathy experienced by a health services provider or other person concerning another person, more particularly of a sufferer from some emotional or somatic condition. (05 Mar 2000) |
| endemic index | The percentage of children infected with malaria or other endemic disease, in any given locality. (05 Mar 2000) |
| transversovertical index | The relation of the height to the length of the skull: (height × 100)/length. Synonym: height-length index, length-height index, transversovertical index. (05 Mar 2000) |
| tuberculo-opsonic index | The opsonic index calculated in relation to tuberculous infection, with an actively growing culture of Mycobacterium tuberculosis or the strain of tubercle bacillus from the patient being used in the test. (05 Mar 2000) |
| facial index | Relation of the length of the face to its maximal width between the zygomatic prominences; to get (05 Mar 2000) |
| karyopyknotic index | An index used to monitor the hormonal status of the patient as reflected by exfoliated vaginal cells and their morphology; an expression of the percentage of intermediate and superficial cells from squamous cells of vaginal epithelium which have pyknotic nuclei. (05 Mar 2000) |
| zygomaticoauricular index | The ratio between the zygomatic and the auricular diameters of the skull or head. (05 Mar 2000) |
| uricolytic index | <biochemistry> The percentage of uric acid oxidised to allantoin before being secreted. (05 Mar 2000) |