Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.

Ex Input:
Smoking is an important risk factor for cardiovascular disease. Sympathetic responses to cigarette smoking may be implicated in the link between smoking and cardiovascular disease. We tested the hypothesis that the sympathetic neural responses to smoking are age dependent.', 'We examined the effects of cigarette smoking and sham smoking on muscle sympathetic nerve activity, blood pressure and heart rate in 14 normotensive middle-aged (49 +/- 4 years) and 12 young (29 +/- 4 years) habitual smokers matched for body mass index (25 +/- 2 kg/m2 in both groups).', 'Sham smoking had no significant effect on sympathetic drive, blood pressure or heart rate in either group. Cigarette smoking increased heart rate in both middle-aged subjects and young subjects. In comparison to younger subjects, middle-aged smokers showed similar smoking-related increases in systolic blood pressure (SBP) [10 +/- 3 versus 12 +/- 2 mmHg, respectively, not significant (NS)]. Smoking decreased sympathetic nerve activity by 28 +/- 12% of baseline values (P < 0.01) in young subjects. However, muscle sympathetic nerve activity did not change significantly after smoking in middle-aged subjects (5 +/- 8%, NS), despite the increased blood pressures, which would be expected to inhibit sympathetic activity. By contrast, in young subjects, the heart rate increase (22 +/- 2 bpm) was greater than that seen in middle-aged subjects (13 +/- 2 bpm, P < 0.01).

Ex Output:
Are sympathetic neural responses to smoking age dependent?


Ex Input:
Reports on outcome after posterior cruciate ligament (PCL) reconstruction often contain both isolated PCL and combined knee ligament injuries. This makes it difficult to conclude on the outcome after reconstruction of isolated PCL injuries.', 'To investigate the outcome after PCL reconstruction in patients with an isolated PCL injury and to compare this with the outcome of patients treated with reconstruction after isolated anterior cruciate ligament (ACL) injuries.', 'Cohort study; Level of evidence, 3.', 'Seventy-one patients with an isolated PCL injury that was reconstructed surgically and who had registered in the Norwegian Knee Ligament Registry between 2004 and 2010 were included in this study. Patients with isolated ACL reconstructions (n = 9661) who had registered in the same period were included for comparison. Knee Injury and Osteoarthritis Outcome Score (KOOS) was used as the patient-reported outcome measure. Preoperative and 2-year postoperative KOOS scores were compared. Changes in KOOS score reported by the PCL patients were compared with changes reported by the ACL patients.', 'At the 2-year postoperative follow-up of the PCL-reconstructed patients, the patient-reported outcome was improved, measured by KOOS as follows: pain, 15.1 (95% CI, 8.5-21.8; P < .001); symptoms, 0.9 (95% CI, -6.6 to 8.3; P = .82); activities of daily living, 13.2 (95% CI, 6.6-13.9; P < .001); sports, 20.7 (95% CI, 11.8-29.4; P < .001); and quality of life, 26.6 (95% CI, 18.9-34.2; P < .001). According to the KOOS, the incremental improvements were similar for PCL and ACL patients. Time from injury to surgery was longer for the PCL patients compared with ACL patients (median, 21.5 vs 8.0 months; P < .001).

Ex Output:
Do patients With Isolated PCL Injuries Improve From Surgery as Much as Patients With ACL Injuries After 2 Years?


Ex Input:
Substance use among husbands has been shown to be associated with higher rates of substance use and of psychiatric symptoms among their wives. However, substance use disorders (SUD) and psychiatric disorders (as opposed to substance use or psychiatric symptoms) are rarely rigorously assessed among large samples of couples, so it is unclear whether SUD among husbands are associated with SUD among their wives, and whether the wives also display a higher prevalence of co-occurring or non-co-occurring psychiatric disorders. We compared the level of SUD, of co-occurring (with SUD) psychiatric disorders, and of non-co-occurring psychiatric diagnoses among the wives of males with SUDs vs among the wives of males without SUDs. We hypothesized that the presence of SUDs among males would be associated with a higher level of SUDs, of co-occurring psychiatric disorders, and of non-co-occurring psychiatric disorders in their wives.', 'The subjects in this study were the spouses of adult men with a lifetime history of an SUD (SUD+ husbands, N=342) vs those with no lifetime history of an SUD (SUD- husbands, N=350). These subjects were recruited for participation in a longitudinal project designed to elucidate the etiology of substance use disorders.', 'Co-occurring SUDs were five times more common among the spouses of SUD+ husbands than among the spouses of SUD- husbands (10.2% vs 2.0%, chi-square=19.7, p=0.000). SUD/depressive disorder and SUD/anxiety disorder were both seven times more common among the spouses of SUD+ husbands than among the spouses of SUD- husbands (19.4% vs 4.7%, chi-square=45.8, p=0.000; 14.3% vs 2.0%, chi-square=34.5, p=0.000). In contrast, non-co-occurring depressive disorders and non-co-occurring anxiety disorders were not more common among the wives of the SUD+ husbands than among the SUD- husbands.

Ex Output:

Is husbands ' SUD associated with higher levels of co-occurring but not non-co-occurring psychiatric disorders among their wives?