Table 3. Patient characteristics and outcomes for low-income and lower-middle-income economies.
| First author, year | #H1N1 patients | #H1N1 patients by social disadvantage | % female | Median age (range) in years | # medical history by social disadvantage | # hospitalizations | # severe illness/ICU | # deaths |
| Reyes 2010 [64] | 239 | 239 Guatemalan | 40.1 | 8.8 (0.05–82) | Comorbidity: 53 other respiratory virus, 21 htn, 12 asthma, 2 DM Pregnant: 49 | 76 Guatemalan | ICU 21 Gautemalan Pneumonia 76 Guatemalan Mechanical ventilation 8 Guatemalan | 11 Guatemalan |
| Louriz 2010 [65] | NR | Reports hospitalization by low-income/lower-middle income economy | 43 | 17.6 (0.08–57; SD 14.8) | Comorbidity: 48 asthma, 13 heart disease, 10 hematologic disease, 4 chronic nephritis, 2 DM Pregnant: 15 Obese 2 | 186 Moroccan | ICU 20 Moroccan Mechanical ventilation 10 Moroccan | 7 Moroccan |
| Lahlou 2011 [66] | 240 | 240 Morocco | 38 | All ages 23 (SD 14) | Hospitalization only: Comorbidity: 7 asthma, 5 DM Pregnant: 13 Obese: 2 | 27 Moroccan | 0 Moroccan | 0 Moroccan |
| Jagannatha Rao 2011 [67] | NR | Reports hospitalization by low-income/lower-middle income economy | 70 | NR (11–80) | Comorobidity: 6 htn | 20 ID | Acute respiratory distress syndrome 6 ID, bronchopneumonia 6 ID | 5 ID |
| Chacko 2010 [68] | NR | Reports hospitalization by low-income/lower-middle income economy | 42 | All ages 35 (IQR: 28.2–42.8) ICU admissions | Comorbidity: 4 htn, 3 DM, 2 asthma, 1 renal failure, 1 immunosuppression, 1 COPD, Obese: 9 Pregnant: 3 | 66 ID | ICU 38 ID | 6 ID |
| Parakh 2010 [69] | NR | Reports hospitalization by low-income/lower-middle income economy | 60 | 2.5 (0.25–10) | Comorbidity: 16 malnutrition, 1 TB, 1 heart disease | 25 ID | Pediatric ICU 7, mechanical ventilation 4 | 3 ID |
| Ramakrishna 2011 [70]*; Pramanick 2011 [71] | NR | Reports hospitalization by low-income/lower-middle income economy | ??ICU: 68% (wave 1), 51% (wave 2) | ICU: Mean 34.1 (SD 13) wave 1, 36.2 (SD 4.6) wave 2 | ICU: Comorbidity: 7 CVD, 8 immunosupressants, 3 DM, 2 respiratory disease MO: 2 Pregnant/postpartum: 15 | 629 ID | ICU 76 ID Mechanical ventilation 72 ID | 48 ID |
| Puvanalingam 2011 [72] | 442 | 442 ID | 44 | All ages | Comorbidity: 71 asthma, 39 TB, 32 HTN, 28 DM Alcoholism: 46 Smoking: 35 | 199 ID (12 pregnant women) | 9 ID pregnant women pneumonia | 3 ID pregnant women |
| Sharma 2010 [73] | NR | Reports hospitalization by low-income/lower-middle income economy | Deaths: 50 | Deaths: mean 38 (10–65, SD 15.3) | Deaths: Comorbidity: 3 COPD, 3 asthma, 3 asthma, 6 htn, 4 DM, 1 CAD Pregnant: 2 Obese: 3 Smoking: 1 Alcohol: 1 | 125 ID | Deaths: 12 acute respiratory distress syndrome ID | 16 ID |
| Chudasama 2011 [74]*; Chudasama 2010 [75]; Chudasama 2010 [76]; Chudasama 2010 [77]; Chudasama 2010 [78] | NR | Reports hospitalization by low-income/lower-middle income economy | 48.5 | 27 (0.38–68) | Comorbidity: 27 DM, 24 htn, 15 CLD, 13 CHD, 7 seizures, 2 chronic renal failure Pregnancy: 15 | 274 ID | NR | 71 ID |
| Gupta 2011 [79] | NR | Reports hospitalization by low-income/lower-middle income economy | 24 | Mean 5.7 (0.5–18, SD 4.1) | Comorbidity: 30 anemia, 30 malnourished | 62 ID | ICU 19 ID | 4 ID |
| Naseem 2011 [80] | NR | Reports hospitalization by low-income/lower-middle income economy | 61.1 | Adults only Mean 34.24 (SD 13.92) | Hospitalization only: Comorbidity: 2 COPD, 2 DM, 2 CHF Obese: 7 Pregnant: 3 Smoking: 9 | 36 Pakistani | ICU 10 Pakistani Mechanical ventilation 10 Pakistani | 6 Pakistani |
Abbreviations: CHD coronary heart disease, CHF congestive heart failure, CLD chronic lung disease, COPD chronic obstructive pulmonary disease, DM diabetes mellitus, htn hypertension, ID Indian descent, NR not reported, SD standard deviation.